The U.S. aircraft register, updated daily
Parts

Time Delay

0 failure reports named the time delay in the last ten years, 2 since 1995. 162 FAA approvals let 6 companies make a replacement time delay, Leach International, North America holding the most (89). The reports call it "time delay", "time delay relay".

Reports by year

000111199511999
Reports by year, as a table
reports
19951
19991

Approved replacement parts 162 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a time delay and sell it as an approved part for the models named. These are the companies holding such approvals for a time delay:

Leach International, North America 89Ducommun Technlogies INC 48Jay-El Products INC 17Triumph Accessory Services 3Lamar INC 3Lamar Technologies LLC 2

For these models most: Boeing 767 (52), Boeing 757 (44), Mcdonnell Douglas DC-9 (30), Mcdonnell Douglas MD-11 (28), Mcdonnell Douglas DC-10 (26), Mcdonnell Douglas Aircraft Co MD-88 (25), Boeing 737 (25), Boeing 747 (16), Piper PA-31 Navajo and Chieftain (8), Boeing 777 (5), Piper PA-42 (4), Mcdonnell Douglas MD-10 (2).

MakerPartReplacesFitsGrantedStatus
Ducommun Technlogies INCTime Delay Relay 530740-7500(530740-7500)Boeing 757-200 Series, 757-300 Series2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-1000(530740-1000)Boeing 737-600 Series, 737-700 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-5001(530740-5001)Boeing 747-400F Series, 747-8 Series, 747-8F Series2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-3000(530740-3000)Boeing 757-200 Series, 757-300 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-4001(530740-4001)Boeing 757-200 Series, 757-300 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-2001(530740-2001)Boeing 757-200 Series, 757-300 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-7501(530740-7501)Boeing 767-200 Series, 767-300 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-7000(530740-7000)Boeing 757-200 Series, 757-200PF Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-3001(530740-3001)Boeing 737-600 Series, 737-700 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-1502(530740-1502)Boeing 767-200 Series, 767-300 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-1001(530740-1001)Boeing 737-700 Series, 737-800 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-1002(530740-1002)Boeing 757-200 Series, 757-300 Series2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-2500(530740-2500)Boeing 757-200 Series, 757-300 Series,...2012-12-18current
Ducommun Technlogies INCTime Delay Relay 530740-1202(530740-1202)Boeing 757-200 Series, 757-300 Series2012-12-18current
Lamar Technologies LLCTime Delay Switch, Pulsed Out-put, 28V B-00341-1B-00341-1, 588-083, PS 50125-2Piper Aircraft, Inc. PA-31, PA-31-300, PA-31-3252012-10-28current
Lamar Technologies LLCTime Delay Switch, Pulsed Out-put, 28V B-00341-1B-00341-1, 588-083, PS 50125-2Piper Aircraft, Inc. PA-31, PA-31-300, PA-31-3252010-12-14current
Leach International, North AmericaTime Delay Relay THD-7120-7001THD-7120-7001Boeing 737-900ER2009-04-09current
Leach International, North AmericaTime Delay Relay THD-7120-5001THD-7120-5001Boeing 737-900ER2009-04-09current
Leach International, North AmericaTime Delay Relay TDH-8119-4002TDH-8119-4002Boeing 747-400 Series2007-02-08current
Leach International, North AmericaTime Delay Relay TDH-8120-3002TDH-8120-3002Boeing 757-200 Series2007-02-08current
Leach International, North AmericaTime Delay Relay TDH-1852-1402TDH-1852-1402Boeing 747-400 Series, 767-200 Series,...2005-05-01current
Leach International, North AmericaTime Delay Relay TDH-8116-1502TDH-8116-1502Boeing 757-200 Series2005-05-01current
Leach International, North AmericaTime Delay Relay TDH-1852-8000TDH-1852-8000Boeing 767-300 Series2004-09-22current
Leach International, North AmericaTime Delay Relay TDH-6103-1204TDH-6103-1204Boeing 747-400 Series2004-08-03current
Leach International, North AmericaTime Delay Relay TDH-6103-6003TDH-6103-6003Boeing 747-400 Series2004-08-03current
Leach International, North AmericaTime Delay Relay TDH-1852-6002TDH-1852-6002Boeing 767-200, -300, 300F2004-06-29current
Leach International, North AmericaTime Delay Relay TDH-8116-1502TDH-8116-1502Boeing 737-600, -700, -8002004-06-29current
Leach International, North AmericaTime Delay Relay TD-1996-1202TD-1996-1202McDonnell Douglas DC-9-81 (MD-81), DC-9-82 (MD-82),...2003-06-01current
Leach International, North AmericaTime Delay Relay TD-2027-4502TD-2027-4502McDonnell Douglas DC-10-10, DC-10-10F, DC-10-30F and MD-112003-06-01current
Leach International, North AmericaTime Delay Relay TD-2040-2501TD-2040-2501McDonnell Douglas DC-10-10, -10F, -30F2003-02-25current
Leach International, North AmericaTime Delay Relay TD-2028-2001TD-2028-2001McDonnell Douglas MD-10-10F, MD-10-30F, MD-112002-05-28current
Leach International, North AmericaTime Delay Relay TD-2042-6002TD-2042-6002McDonnell Douglas DC-9-81, -82, -832002-04-10current
Leach International, North AmericaTime Delay Relay TD-1982-1002TD-1982-1002Boeing 757-200 Series, 757-200PF Series,...2002-02-13current
Leach International, North AmericaTime Delay Relay TDH-6108-6002TDH-6108-6002Boeing 777-200 Series, 777-300 Series2002-02-13current
Leach International, North AmericaTime Delay Relay TD-1982-2500TD-1982-2500Boeing 757-200 Series, 757-200PF Series,...2002-02-13current
Leach International, North AmericaTime Delay Relay TD-1982-7500TD-1982-7500Boeing 757-200 Series, 757-200PF Series,...2001-08-29current
Leach International, North AmericaTime Delay Relay TDH-1852-6000TDH-1852-6000Boeing 767-200 Series, 767-300 Series,...2001-05-22current
Leach International, North AmericaTime Delay Relay TD-1959-60025D0216-0-600Boeing MD-10-10F, MD-10-30F2001-05-22current
Leach International, North AmericaTime Delay Relay TD-948TD-948McDonnell Douglas DC-8-31, -32, -332000-12-04current
Leach International, North AmericaTime Delay Relay TD-1982-4001TD-1982-4001Boeing 767-200 Series, 767-300 Series,...2000-10-12current
Leach International, North AmericaTime Delay Relay TDH-7101-1203TDH-7101-1203Boeing 737-700 Series, 737-800 Series2000-08-30current
Leach International, North AmericaTime Delay Relay TDH-1852-2001TDH-1852-2001Boeing 747-400 Series, 747-400F series,...1999-08-01current
Leach International, North AmericaTime Delay Module TD-1982-1502Boeing TD-1982-1502Boeing 737-300 Series, 737-400 Series,...1999-04-28current
Leach International, North AmericaTime Delay Relay TDH-1852-4000Boeing 600-154-4000Boeing 747-400 Series, 767-200 Series,...1999-04-28current
Ducommun Technlogies INCTime Delay 10167-1501-BTBoeing 10167-1501-BTBoeing 767-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-7501-BTBoeing 10167-7501-BTBoeing 767-200, -3001999-02-08current
Ducommun Technlogies INCTime Delay 10167-7000-BTBoeing 10167-7000-BTBoeing 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-4001-BTBoeing 10167-4001-BTBoeing 767-200, -300 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-8001-BTBoeing 10167-8001-BTBoeing 767-200, -3001999-02-08current
Ducommun Technlogies INCTime Delay 10167-1001-BTBoeing 10167-1001-BTBoeing 767-200 747-100, -200, -3001999-02-08current
Ducommun Technlogies INCTime Delay 10167-2001-BTBoeing 10167-2001-BTBoeing 767-200, -300 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-1002-BTBoeing 10167-1002-BTBoeing 767-300 747-100, -200, -300 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-2500-BTBoeing 10167-2500-BTBoeing 737-200 767-200, -300 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-3001-BTBoeing 10167-3001-BTBoeing 767-200, -300 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-5001-BTBoeing 10167-5001-BTBoeing 737-300, -400, -500 747-400 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-3000-BTBoeing 10167-3000-BTBoeing 737-300 767-200, -300 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-7500-BTBoeing 10167-7500-BTBoeing 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-1202-BTBoeing 10167-1202-BTBoeing 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-5000-BTBoeing 10167-5000-BTBoeing 767-200, -300 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-1502-BTBoeing 10167-1502-BTBoeing 737-300, -400, -500 767-2001999-02-08current
Ducommun Technlogies INCTime Delay 10167-1000-BTBoeing 10167-1000-BTBoeing 737-300, -400, -500 757-2001999-02-08current
Ducommun Technlogies INCTime Delay 530750-5001Boeing 530750-5001Boeing 737-300 Series, 737-400 Series,...1999-02-08current
Ducommun Technlogies INCTime Delay 530750-2001Boeing 530750-2001Boeing 757-200 Series, 757-200PF, 757-200 COMBI1999-02-08current
Ducommun Technlogies INCTime Delay 530750-1202Boeing 530750-1202Boeing 757-200 Series, 757-200PF, 757-200 COMBI1999-02-08current
Ducommun Technlogies INCTime Delay 530750-7501Boeing 530750-7501Boeing 767-200 Series, 767-300 Series, 767-300F1999-02-08current
Ducommun Technlogies INCTime Delay 530750-7500Boeing 530750-7500Boeing 757-200 Series, 757-200PF, 757-200 COMBI1999-02-08current
Ducommun Technlogies INCTime Delay 530750-7000Boeing 530750-7000Boeing 757-200 Series, 757-200PF, 757-200 COMBI1999-02-08current
Ducommun Technlogies INCTime Delay 530750-1001Boeing 530750-1001Boeing 747SP, 747-100B Series, 747-200B Series1999-02-08current
Ducommun Technlogies INCTime Delay 530750-2500Boeing 530750-2500Boeing 737-200 Series, 757-200 Series, 757-200PF1999-02-08current
Ducommun Technlogies INCTime Delay 530750-3001Boeing 530750-3001Boeing 737-700, 747-200B Series, 757-200 Series1999-02-08current
Ducommun Technlogies INCTime Delay 530750-1002Boeing 530750-1002Boeing 747SP, 747-SR, 747-100 Series1999-02-08current
Ducommun Technlogies INCTime Delay 530750-1000Boeing 530750-1000Boeing 737-300 Series, 737-400 Series,...1999-02-08current
Ducommun Technlogies INCTime Delay 530750-5000Boeing 530750-5000Boeing 757-200 Series, 757-200PF, 757-200 COMBI1999-02-08current
Ducommun Technlogies INCTime Delay 530750-1502Boeing 530750-1502Boeing 737-300 Series, 737-400 Series,...1999-02-08current
Ducommun Technlogies INCTime Delay 530750-4001Boeing 530750-4001Boeing 757-200 Series, 757-200PF, 757-200 COMBI1999-02-08current
Ducommun Technlogies INCTime Delay 530750-1501Boeing 530750-1501Boeing 767-200 Series1999-02-08current
Ducommun Technlogies INCTime Delay 530750-3000Boeing 530750-3000Boeing 737-300 Series, 737-400 Series,...1999-02-08current
Ducommun Technlogies INCTime Delay 530750-8001Boeing 530750-8001Boeing 767-200 Series, 767-300 Series1999-02-08current
Jay-El Products INCTime Delay 530750-4001Boeing 530750-4001Boeing 757-200 Series, 757-200PF, 757-200 COMBI1998-07-28current
Jay-El Products INCTime Delay 530750-7000Boeing 530750-7000Boeing 757-200 Series, 757-200PF, 757-200 COMBI1998-07-28current
Jay-El Products INCTime Delay 530750-7500Boeing 530750-7500Boeing 757-200 Series, 757-200PF, 757-200 COMBI1998-07-28current
Jay-El Products INCTime Delay 530750-5001Boeing 530750-5001Boeing 737-300 Series, 737-400 Series,...1998-07-28current
Jay-El Products INCTime Delay 530750-8001Boeing 530750-8001Boeing 767-200 Series, 767-300 Series1998-07-28current
Jay-El Products INCTime Delay 530750-1000Boeing 530750-1000Boeing 737-300 Series, 737-400 Series,...1998-07-28current
Jay-El Products INCTime Delay 530750-2001Boeing 530750-2001Boeing 757-200 Series, 757-200PF, 757-200 COMBI1998-07-28current
Jay-El Products INCTime Delay 530750-3001Boeing 530750-3001Boeing 737-700, 747-200B Series, 757-200 Series1998-07-28current
Jay-El Products INCTime Delay 530750-7501Boeing 530750-7501Boeing 767-200 Series, 767-300 Series, 767-300F1998-07-28current
Jay-El Products INCTime Delay 530750-1002Boeing 530750-1002Boeing 747SP, 747-SR, 747-100 Series1998-07-28current
Jay-El Products INCTime Delay 530750-1001Boeing 530750-1001Boeing 747SP 747-100B Series, 747-200B...1998-07-28current
Jay-El Products INCTime Delay 530750-1501Boeing 530750-1501Boeing 767-200 Series1998-07-28current
Jay-El Products INCTime Delay 530750-1202Boeing 530750-1202Boeing 757-200 Series, 757-200PF, 757-200 COMBI1998-07-28current
Jay-El Products INCTime Delay 530750-5000Boeing 530750-5000Boeing 757-200 Series, 757-200PF, 757-200 COMBI1998-07-28current
Jay-El Products INCTime Delay 530750-1502Boeing 530750-1502Boeing 737-300 Series, 737-400 Series,...1998-07-28current
Jay-El Products INCTime Delay 530750-3000Boeing 530750-3000Boeing 737-300 Series, 737-400 Series,...1998-07-28current
Jay-El Products INCTime Delay 530750-2500Boeing 530750-2500Boeing 737-200 Series, 757-200 Series, 757-200PF1998-07-28current
Leach International, North AmericaTime Delay Relay TD-1164McDonnell Douglas TD-1164McDonnell Douglas DC-10-10, -10CF, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-1990-3001McDonnell Douglas TD-1990-3001McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-635-60SMcDonnell Douglas TD-635-60SMcDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1996-5001McDonnell Douglas TD-1996-5001McDonnell Douglas DC-9-31, -32, -33F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1452-00McDonnell Douglas TD-1452-00McDonnell Douglas DC-10-30, -30CF, -40 MD-111996-07-14current
Leach International, North AmericaTime Delay Relay TD-7119-7500McDonnell Douglas TD-7119-7500McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-640-15SMcDonnell Douglas TD-640-15SMcDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1972-1251McDonnell Douglas TD-1972-1251McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1784-1001McDonnell Douglas TD-1784-1001McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TDH-8150-6002McDonnell Douglas TDH-8150-6002McDonnell Douglas DC-10-10, -10F, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-1904-5001McDonnell Douglas TD-1904-5001McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-640-60SMcDonnell Douglas TD-640-60SMcDonnell Douglas DC-9-31, -32, -33F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1542-2002McDonnell Douglas TD-1542-2002McDonnell Douglas DC-10-30, -30CF, -401996-07-14current
Leach International, North AmericaTime Delay Relay TDH-1960-8001McDonnell Douglas TDH-1960-8001McDonnell Douglas DC-10-10, -10CF, -301996-07-14current
Leach International, North AmericaTime Delay Relay TD-640-3SMcDonnell Douglas TD-640-3SMcDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-1781-6002McDonnell Douglas TD-1781-6002McDonnell Douglas DC-10-10, -30, -401996-07-14current
Leach International, North AmericaTime Delay Relay TD-1955-5000McDonnell Douglas TD-1955-5000McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-1023McDonnell Douglas TD-1023McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-947McDonnell Douglas TD-947McDonnell Douglas DC-10-10, -10CF, -301996-07-14current
Leach International, North AmericaTime Delay Relay TD-1956-2000McDonnell Douglas TD-1956-2000McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-1040McDonnell Douglas TD-1040McDonnell Douglas DC-10-10, -30, -30F1996-07-14current
Leach International, North AmericaTime Delay Relay TDH-1964-4001McDonnell Douglas TDH-1964-4001McDonnell Douglas DC-10-10, -10CF, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-1749-3001McDonnell Douglas TD-1749-3001McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TDH-8150-3003McDonnell Douglas TDH-8150-3003McDonnell Douglas DC-10-10, -10F, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-1324-00McDonnell Douglas TD-1324-00McDonnell Douglas DC-10-10, -10CF, -301996-07-14current
Leach International, North AmericaTime Delay Relay TD-1868-1002McDonnell Douglas TD-1868-1002McDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1762-1002McDonnell Douglas TD-1762-1002McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-1383-00McDonnell Douglas TD-1383-00McDonnell Douglas DC-10-30, -30CF, -40 MD-111996-07-14current
Leach International, North AmericaTime Delay Relay TD-640-30SMcDonnell Douglas TD-640-30SMcDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1975-3003McDonnell Douglas TD-1975-3003McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1771-3003McDonnell Douglas TD-1771-3003McDonnell Douglas DC-10-10, -30, -30CF MD-111996-07-14current
Leach International, North AmericaTime Delay Relay TD-1971-7500McDonnell Douglas TD-1971-7500McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1030McDonnell Douglas TD-1030McDonnell Douglas DC-9-11, -12, -131996-07-14current
Leach International, North AmericaTime Delay Relay TDH-1994-4502McDonnell Douglas TDH-1994-4502McDonnell Douglas DC-10-10, -10F, -151996-07-14current
Leach International, North AmericaTime Delay Relay TDH-8150-6003McDonnell Douglas TDH-8150-6003McDonnell Douglas DC-10-10, -10CF, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-1273McDonnell Douglas TD-1273McDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TDH-7122-5001McDonnell Douglas TDH-7122-5001McDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TDH-1970-6002McDonnell Douglas TDH-1970-6002McDonnell Douglas DC-10-10, -10F, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-2000-5000McDonnell Douglas TD-2000-5000McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1654-3001McDonnell Douglas TD-1654-3001McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-640-10SMcDonnell Douglas TD-640-10SMcDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-640-2SMcDonnell Douglas TD-640-2SMcDonnell Douglas DC-9-31, 32, -33F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-950McDonnell Douglas TD-950McDonnell Douglas DC-10-10, -10CF, -151996-07-14current
Leach International, North AmericaTime Delay Relay TDH-1962-5001McDonnell Douglas TDH-1962-5001McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1815-5001McDonnell Douglas TD-1815-5001McDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1239McDonnell Douglas TD-1239McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TDH-1965-6001McDonnell Douglas TDH-1965-6001McDonnell Douglas MD-11, MD-11F, MD-11C1996-07-14current
Leach International, North AmericaTime Delay Relay TDH-8150-5001McDonnell Douglas TDH-8150-5001McDonnell Douglas DC-10-10, -10F, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-770McDonnell Douglas TD-770McDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TD-1868-2002McDonnell Douglas TD-1868-2002McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-1718-2001McDonnell Douglas TD-1718-2001McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-1958-5000McDonnell Douglas TD-1958-5000McDonnell Douglas DC-9-81, -82, -831996-07-14current
Leach International, North AmericaTime Delay Relay TD-2001-1502McDonnell Douglas TD-2001-1502McDonnell Douglas DC-9-31, -32, -32F1996-07-14current
Leach International, North AmericaTime Delay Relay TDH-8150-1202McDonnell Douglas TDH-8150-1202McDonnell Douglas DC-10-10, -10F, -151996-07-14current
Leach International, North AmericaTime Delay Relay TD-640-300MMcDonnell Douglas TD-640-300MMcDonnell Douglas DC-9-31, -32, -32F1996-07-14current

The first 150 of 162.

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.