The U.S. aircraft register, updated daily
Parts · Engine

Lead

59 failure reports named the lead in the last ten years, 241 since 1995, most often on the Boeing 737; the condition most often found was "damaged". 192 FAA approvals let 19 companies make a replacement lead, Unison Industries holding the most (109). The reports call it "lead", "p-lead", "lead assembly", "lead assy", "lead/lag link" and 1 other ways.

Reports by year

0510141919952000200520102015202112026
Reports by year, as a table
reports
19954
19965
19977
19984
19998
20009
200116
200216
20039
20045
200511
20062
20072
20086
200913
20103
201114
201211
20139
201419
20159
20168
201717
20186
201911
20216
20227
20233
20261

How it failed the condition found, last ten years

damaged12failed7disconnected4faulted4broken3loose3burned2chafed2cracked2inoperative2
Conditions found, as a table
reports
damaged12
failed7
disconnected4
faulted4
broken3
loose3
burned2
chafed2
cracked2
inoperative2

Engines most often reporting it

Approved replacement parts 192 parts manufacturer approvals

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

For these models most: Northrop C-125 (12), Embraer EMB-145 ERJ 145 (4), Embraer EMB-135 ERJ 135 and Legacy (4), Boeing 737 (3), Airbus A340 (3), Airbus A330 (3), Piper PA-34 Seneca (2), Mcdonnell Douglas MD-11 (2), Mcdonnell Douglas MD-10 (2), Mcdonnell Douglas DC-10 (2), Douglas DC-10 (2), Cessna T-310 (2).

MakerPartReplacesFitsGrantedStatus
Hartzell Engine Technologies LLCLead Assembly, Retard ES10‐15724110-157241Continental... C90-12, -14, -162023-11-09current
Unison IndustriesLead, Ignition 514000-22489M03P02CFM International LEAP-1C28, LEAP-1C30, LEAP-1C30B12023-06-01current
Unison IndustriesLead, Ignition 513484-22548M61P02CFM International LEAP-1C28, LEAP-1C30, LEAP-1C30B12023-06-01current
Unison IndustriesLead, Igniter, Short 519506-1519506-1Rolls-Royce... RRD) (BR700-710D5-212020-12-02current
Unison IndustriesLead, Igniter, Long 519506-2519506-2Rolls-Royce... RRD) (BR700-710D5-212020-12-02current
Unison IndustriesLead, Igniter 518180-2518180-2Rolls Royce Trent 7000-72, Trent 7000-72C2019-10-10current
Unison IndustriesLead, Igniter 518180-1518180-1Rolls Royce Trent 7000-72, Trent 7000-72C2019-10-10current
Unison IndustriesLEAD, IGNITION 515464-32546M39P03General Electric Co.... Left Engine GE-P20-17BB1AG03...2019-10-10current
Unison IndustriesLEAD, IGNITION 515463-32488M60P03General Electric Co.... Left Engine GE-P20-17BB1AG03...2019-10-10current
Aircraft Component Design LLCLead, Electrical Ignition 4052T54P03ACD4052T54P03General Electric Company E8NE CT7-9B CT7-9C CT7-9D CT7-8 CT7-8A...2019-04-01current
Aircraft Component Design LLCLead, Electrical Ignition 4052T54P01ACD4052T54P01General Electric Company E8NE CT7-9B CT7-9C CT7-9D CT7-8 CT7-8A...2019-04-01current
Aircraft Component Design LLCLead, Electrical Ignition 4052T54P02ACD4052T54P02General Electric Company E8NE CT7-9B CT7-9C CT7-9D CT7-8 CT7-8A...2019-04-01current
Unison IndustriesLead, Ignition 9048235-21837M29P01General Electric,... GE90-90B2018-10-24current
Aviation Component Services, INCLead Assembly, Electrical L.H TC200-01ACSCFM International TC200-00, TC200-01, TC200-02CFM International, S.A. CFM56-2A, CFM56-2A-2, CFM56-2A-32017-06-13current
Aviation Component Services, INCLead Assembly, Electrical L.H. TC174-01ACSCFM International TC174-00, TC174-01, TC174-02CFM International, S.A. CFM56-2A, CFM56-2A-2, CFM56-2A-32017-06-13current
Unison IndustriesLead, Ignition 515277-1CFM International PN 2570M25P01CFM International LEAP-1B28, LEAP-1B28B2, LEAP-1B28B12017-05-08current
Unison IndustriesLead, Ignition 515278-1CFM International PN 2570M26P01CFM International LEAP-1B28, LEAP-1B28B2, LEAP-1B28B12017-05-08current
Unison IndustriesLead, Ignition 515278-1CFM International, S.A. PN 2570M26P01CFM International, S.A. LEAP - 1B28 LEAP - 1B28B22016-12-07current
Unison IndustriesLead, Ignition 515277-1CFM International, S.A. PN 2570M25P01CFM International, S.A. LEAP - 1B28 LEAP - 1B28B22016-12-07current
Hartzell Engine Technologies LLCLead, Ignition RA-719842719842Beechcraft Corporation D18S, S/N A-38 thru A-1019) Textron...2016-06-07current
Goodrich InteriorsLead Assembly 8KA407333-01Modification PartBoeing DC-10-10, DC-10-40, DC-10-302014-04-10current
Goodrich InteriorsLead Assembly 8KA407333-02Modification PartBoeing DC-10-10, DC-10-40, DC-10-302014-04-10current
Balloonacy LTD LLCLower Lead Assembly ARP3030330303Aerostar Intl, Inc. All series2013-07-07current
Hartzell Engine Technologies LLCLead 745Ward Aero 746, 745Teledyne Continental Motors Series A-50, A-65, A-752013-02-24current
Hartzell Engine Technologies LLCLead 745Ward Aero 652, Bendix/Scintilla, 10-357164, 10-357165Teledyne Continental Series A-50, A-65, A-752013-02-24current
Hartzell Engine Technologies LLCLead 746Ward Aero 746, 745Teledyne Continental Motors Series A-50, A-65, A-752013-02-24current
Hartzell Engine Technologies LLCLead 746Ward Aero 652, Bendix/Scintilla, 10-357164, 10-357165Teledyne Continental Series A-50, A-65, A-752013-02-24current
Balloonacy LTD LLCLead, Thermocouple ARP1040810408Aerostar Intl, Inc. All series2013-02-19current
Kelly Aerospace Energy Systems LLCLead 746P/N 746 when P/N 652 coil used in conjunction...Teledyne Continental Motors Series A-50, A-65, A-752012-11-29current
Kelly Aerospace Energy Systems LLCLead 745Used with Ward Aero magneto coil P/N 652 when...Teledyne Continental Series A-50, A-65, A-752012-11-29current
Kelly Aerospace Energy Systems LLCLead 745P/N 745 when P/N 652 coil used in conjunction...Teledyne Continental Motors Series A-50, A-65, A-752012-11-29current
Kelly Aerospace Energy Systems LLCLead 746Used with Ward Aero magneto coil P/N 652 when...Teledyne Continental Series A-50, A-65, A-752012-11-29current
Hartzell Engine Technologies LLCLead 746Ward Aero 652 Bendix/Scintilla, 10-357164, 10-357165Teledyne Continental Series A-50, A-65, A-752010-10-21current
Hartzell Engine Technologies LLCLead 745Ward Aero 652 Bendix/Scintilla, 10-357164, 10-357165Teledyne Continental Series A-50, A-65, A-752010-10-21current
Hartzell Engine Technologies LLCLead 746Ward Aero 746 745Teledyne Continental Motors Series A-50, A-65, A-752010-10-21current
Hartzell Engine Technologies LLCLead 745Ward Aero 746 745Teledyne Continental Motors Series A-50, A-65, A-752010-10-21current
Unison IndustriesLead, Ignition 502575-4Engine Alliance P/N 2045M76P04Engine Alliance GP7270, GP72772008-03-05current
Pacific Propeller INCLead 65227226522722Pacific Propeller AEROPRODUCTS A6441FN 606/606A2005-06-27current
Tmt Research Development INCLead Assembly AS48775TMTAS48775Erickson Air S-64E, S-64F2004-12-26current
Herber Aircraft Service INCLeft Lead Assy HAS174-00/01/02CA174-00/01/02CFM International CFM56-5C2/-5C3/-5C42004-02-24current
Herber Aircraft Service INCRight Lead Assy HAS175-00/01/02CA175-00/01/02CFM International CFM56-5C2/-5C3/-5C42004-02-24current
Unison IndustriesLead 9048120-10General Electric P/N 4096T96P10General Electric TC E00063N CF34-8C, CF34-8Cf, CF34-8E2003-11-11current
Unison IndustriesLead 9048120-9General Electric P/N 4096T96P09General Electric TC E00063N CF34-8C, CF34-8C5, CF34-8E2003-11-11current
Rapco INCLead Kit RA2067-4Goodrich P/N 4E1967-4 RAPCO P/N RA-4E1967-4Raytheon 95-B55, E55. 56TC. A56TC. 58. 58P,...2003-04-07current
Rapco INCLead Kit RA2067-1Goodrich P/N 4E1967-1 RAPCO P/N RA4E1967-1Piper PA-34-200. PA-34-200T w/2-bladed...2003-04-07current
Rapco INCLead Kit RA2067-3Goodrich P/N 4E1967-3Cessna 340 modified w/Hartzell 3-bladed...2003-04-07current
Rapco INCLead Kit RA2067-2Goodrich P/N 4E1967-2 RAPCO P/N RA4E1967-2Twin Commander 500-B. 500-U. 500-S serials 3115&up...2003-04-07current
Unison IndustriesLead Assembly 9048202-211Sundstrand 4950581-1Airbus Sundstrand APU model APS 3200 used...2003-03-19current
Unison IndustriesLead Assembly 9048202-212Sundstrand 4950581-2Airbus Sundstrand APU model APS 3200 used...2003-03-19current
Unison IndustriesLead Assembly 9048202-213Hamilton Sundstrand 4951491Embraer Empresa EMB-145, EMB-145ER, EMB-145MR2003-01-08current
Unison IndustriesLead Assembly 9048202-211Hamilton Sundstrand 4950581-1Embraer Empresa EMB-145, EMB-145ER, EMB-145MR2003-01-08current
Unison IndustriesLead Assembly 9048202-204Hamilton Sundstrand 115352-1Embraer Empresa EMB-145, EMB-145ER, EMR-145MR2002-10-22current
Unison IndustriesLead Assembly 9048202-206Hamilton Sundstrand 115352-4Embraer Empresa EMB-145, EMB-145ER, EMR-145MR2002-10-22current
Unison IndustriesLead 9048202-202Hamilton Sundstrand 115352-2BAE Systems Operations) Limited (146-RJ70A,...2002-10-06current
Unison IndustriesLead, Ignition 59616General Electrical 37C311098P101General Electric CF700-2C, CF700-2D, CF610-12002-10-06current
Harco Laboratories INCLead, Tt7 Boost 25077-000821428Pratt & Whitney JT8D-112001-01-24current
Rosemount Aerospace INCLead 3199061Piper P/N 554-383, Lewis P/N 3199061Piper PA-31T32000-02-07current
Unison IndustriesLead, installation 9059190-8Pratt & Whitney 31J2346-08Pratt & Whitney Canada PW530A1999-08-30current
Unison IndustriesLead, installation 9059190-7Pratt & Whitney 31J2346-07Pratt & Whitney Canada PW530A1999-08-30current
Unison IndustriesLead, ignition 650071Rolls-Royce 650071Rolls-Royce Tay 610-8, Tay 611-8, Tay 611-851999-08-30current
Unison IndustriesLead, installation 9059150-7Pratt & Whitney 31J1908-07Pratt & Whitney Canada PW530A1999-08-30current
Unison IndustriesLead, installation 9059150-8Pratt & Whitney 31J1908-08Pratt & Whitney Canada PW530A1999-08-30current
Unison IndustriesLead, ignition 9059110-2CFM International 9059110-2 (GE Spec. 1853M13P04)CFM International CFM56-7B18, CFM56-7B20, CFM56-7B20/21999-07-26current
Unison Industries LLCLead, ignition 430973-3BMW Rolls-Royce 83311-430973-3BMW Rolls-Royce GmbH BR700-710A1-101999-04-20current
Unison Industries LLCLead Assembly MIDO Farmingdale NY FAA...Fokker Services P/N PN 58719-3500Fokker F271998-12-02current
Unison Industries LLCLead Assembly 58860-08203 Dwg. Rev. H...Fokker Services PN 58860-08203Fokker F271998-09-15current
Champion Aerospace LLCLead Assembly 53270Allison Engine Co. 23060818Allison Engine 250-C20F, -C20R (All)1998-09-14current
Unison IndustriesLead, ignition 430937-1RR L963042Rolls-Royce RB211 Trent 875-17, 877-17, 884-171998-01-26current
Unison IndustriesLead, ignition 47228GE 9284M88P01General Electric CF6-80A/A11998-01-26current
Unison IndustriesLead, ignition 40534PWA 368159Pratt & Whitney JT4A Series1998-01-26current
Unison IndustriesLead, ignition CO 59539AVCO LycomingTextron Lycoming GSO-480, IGSO -480, IGSO-540-A1998-01-26current
Unison IndustriesLead, ignition 44785-1GE 1156M41P11CFM International CFM56-21998-01-26current
Unison IndustriesLead, ignition CO 58720Rolls RoyceRolls-Royce Dart 506, 510, 5111998-01-26current
Unison IndustriesLead, ignition 47227-3GE 9284M89P05General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, ignition 45165GE 9284M89P09General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, ignition 45495-3GE 9387M24P10CFM International CFM 56-51998-01-26current
Unison IndustriesLead, ignition 40535PWA 368158Pratt & Whitney JT3C-6, JT4A Series1998-01-26current
Unison IndustriesLead, ignition 40517PWA 360653Pratt & Whitney JT3C-7, -121998-01-26current
Unison IndustriesLead, ignition CO 58120Wright AeronauticalCurtiss-Wright/Marquette 972 TC 18 DA-1, -2, -31998-01-26current
Unison IndustriesLead, ignition 45573-1GE 9339M26P11CFM International CFM56-3, -3B1998-01-26current
Unison IndustriesLead, ignition 45572-1GE 1156M41P17CFM International CFM56-21998-01-26current
Unison IndustriesLead, ignition 45573-2GE 9339M26P12CFM International CFM56-3, -3B1998-01-26current
Unison IndustriesLead, ignition CO 58281Pratt & WhitneyPratt & Whitney Double Wasp CB3, CB16, CB171998-01-26current
Unison IndustriesLead, ignition CO 58845Pratt & WhitneyPratt & Whitney PWA Double Wasp CB Series1998-01-26current
Unison IndustriesLead, ignition CO 66493-2GE 4052T54P02General Electric T700-T1C, -T2C, CT7-21998-01-26current
Unison IndustriesLead, ignition 430932PWA 814750Pratt & Whitney JT8D-209, -217, -217A1998-01-26current
Unison IndustriesLead, ignition 430943PWA 814189Pratt & Whitney JT9D-20, -20J1998-01-26current
Unison IndustriesLead, ignition 47227-1GE 9284M89P01General Electric CF6-80A/A11998-01-26current
Unison IndustriesLead, ignition 430940PWA 814186Pratt & Whitney JT9D-7R4D, D1, E1998-01-26current
Unison IndustriesLead, ignition 47997GE 9284M88P07General Electric CF6-80A/A21998-01-26current
Unison IndustriesLead, ignition 430934RR L963039Rolls-Royce RB211 Trent 768-60, 772-601998-01-26current
Unison IndustriesLead, Ignition, 430944PWA 814193Pratt & Whitney JT9D-59A, -7Q3, -70A1998-01-26current
Unison IndustriesLead, ignition CO 650089RR L907921Rolls-Royce RB211-524G, RB211-524H1998-01-26current
Unison IndustriesLead, ignition CO 7409Wright AeronauticalCurtiss-Wright/Marquette 749C18BD-1, -31998-01-26current
Unison IndustriesLead, ignition CO 59543AVCO LycomingTextron Lycoming IGO-540, IGSO-5401998-01-26current
Unison IndustriesLead, ignition 47245-1GE 9291M43P03General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, ignition 47998-1GE 9291M43P06General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, ignition CO 66273Rolls RoyceRolls-Royce RB211-22B-02, -20/10, -02/111998-01-26current
Unison IndustriesLead, ignition 47227-2GE 9284M89P03General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, ignition CO 59540AVCO LycomingTextron Lycoming GSO-480, IGSO -480, IGSO-540-A1998-01-26current
Unison IndustriesLead, ignition 430933PWA 814753Pratt & Whitney JT8D-209, -217, -217A1998-01-26current
Unison IndustriesLead, ignition 47997-1GE 9284M88P09General Electric CF6-80A/A21998-01-26current
Unison IndustriesLead, ignition CO 59542AVCO LycomingTextron Lycoming IGO-540, IGSO-5401998-01-26current
Unison IndustriesLead, ignition 40516PWA 360652Pratt & Whitney JT3C-7, -121998-01-26current
Unison IndustriesLead, ignition CO 66946RR L907902Rolls-Royce RB211-535E4, RB211-535E4B1998-01-26current
Unison IndustriesLead, ignition CO 66430GE 4049T61P01General Electric CF34-1A, -3A1998-01-26current
Unison IndustriesLead, ignition 47228-1GE 9284M88P03General Electric CF6-80A/A11998-01-26current
Unison IndustriesLead, ignition 430929PWA 814747Pratt & Whitney JT8D-1 Thru -17AR1998-01-26current
Unison IndustriesLead, ignition 430942PWA 814188Pratt & Whitney JT9D-20, -20J1998-01-26current
Unison IndustriesLead, ignition CO 58719Rolls RoyceRolls-Royce Dart 506, 510, 5111998-01-26current
Unison IndustriesLead, ignition 47245GE 9291M43P01General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, ignition 45164GE 9284M89P08General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, ignition CO 66493-3GE 4052T54P03General Electric T700-T1C, -T2C, CT7-21998-01-26current
Unison IndustriesLead, ignition 430946PWA 814194Pratt & Whitney JT9D-7R4D1, G21998-01-26current
Unison IndustriesLead, ignition 430934-1RR L963043Rolls-Royce RB211 Trent 768-60, 772-60, 875-171998-01-26current
Unison IndustriesLead, ignition CO 66493-1GE 4052T54P01General Electric T700-T1C, -T2C, CT7-21998-01-26current
Unison IndustriesLead, ignition 430930PWA 814748Pratt & Whitney JT8D-1 Thru -17AR1998-01-26current
Unison IndustriesLead, ignition 47228-2GE 9284M88P05General Electric CF6-80A/A11998-01-26current
Unison IndustriesLead, ignition CO 59053Pratt & WhitneyPratt & Whitney PWA Double Wasp CB Series1998-01-26current
Unison IndustriesLead, ignition CO 650076-1Fokker 650076-1Fokker F28MK0100, F28MK00701998-01-26current
Unison IndustriesLead, ignition CO 58280Pratt & WhitneyPratt & Whitney WAD TC18DA & EA Series, PWA, Major &...1998-01-26current
Unison IndustriesLead, ignition CO 58645Wright AeronauticalPratt & Whitney PWA TC 18DA-EA Series Wasp Major &...1998-01-26current
Unison IndustriesLead, ignition CO 58811Pratt & WhitneyPratt & Whitney PWA Double Wasp CB Series1998-01-26current
Unison IndustriesLead, ignition 45163GE 9284M89P07General Electric CF6-80A/A21998-01-26current
Unison IndustriesLead, ignition CO 650076-2Fokker 650076-2Fokker F28MK0100, F28MK00701998-01-26current
Unison IndustriesLead, ignition 47998GE 9291M43P04General Electric CF6-80A1/A31998-01-26current
Unison IndustriesLead, Ignition, 430945PWA 814190Pratt & Whitney JT9D-59A, -7Q3, -70A1998-01-26current
Unison IndustriesLead, ignition 430973-3BMW-RR 83311-430973-3BMW Rolls-Royce GmbH BR700-710A1-101998-01-26current
Unison IndustriesLead, ignition CO 58666Wright AeronauticalPratt & Whitney PWA TC 18DA -EA Series Wasp Major &...1998-01-26current
Unison IndustriesLead, ignition 430937-2RR L963044Rolls-Royce RB211 Trent 875-17, 877-17, 884-171998-01-26current
Unison IndustriesLead, ignition CO 58540Pratt & WhitneyPratt & Whitney PWA Wasp Major R-4360 Series1998-01-26current
Unison IndustriesLead, ignition 44785-2GE 1156M41P12CFM International CFM56-21998-01-26current
Unison IndustriesLead, ignition CO 59538AVCO LycomingTextron Lycoming IGO-540, IGO-5401998-01-26current
Unison IndustriesLead, ignition CO 6336Wright AeronauticalCurtiss-Wright/Marquette 749C18BD-1, -31998-01-26current
Unison IndustriesLead, ignition CO 7408Pratt & WhitneyPratt & Whitney PWA Aircraft Double Wasp CB-3, CB16,...1998-01-26current
Unison IndustriesLead, ignition 430941PWA 814187Pratt & Whitney JT9D-3A, - 7, - 7A1998-01-26current
Unison Industries LLCLead 59540Avco LycomingAvco Lycoming,... GSO-480, IGSO-480, IGSO-540-A1997-09-16current
Unison Industries LLCLead 59543Avco LycomingAvco Lycoming,... IGO-540, IGSO-5401997-09-16current
Unison Industries LLCLead 59539Avco LycomingAvco Lycoming,... GSO-480, IGSO-480, IGSO-540-A1997-09-16current
Unison Industries LLCLead 59538Avco LycomingAvco Lycoming,... IGO-5401997-09-16current
Unison Industries LLCLead 59542Avco LycomingAvco Lycoming,... IGO-540, IGSO-5401997-09-16current
Unison Industries LLCLead 66430 Dwg. Rev. J Bill of...General Electric PN4049T61P01General Electric CF34-1A.-3A1997-07-24current
Unison Industries LLCLead 66493-2 Dwg. Rev. N Bill...General Electric PN 4052TS4P02General Electric T700-T1C.-T2C CT7-2, 2A1997-07-24current
Unison Industries LLCLead 66493-3 Dwg. Rev. N Bill...General Electric PN 4052T54P03General Electric T700-T1C-T2C CT7-2, -2A1997-07-24current
Unison Industries LLCLead 66493-1 Dwg. Rev. N Bill...General Electric PN 4052T54P01General Electric T700-T1C, -T2C CT7-2t-2A1997-07-24current
Astronics Luminescent Systems INCLead Assembly, Lamp Cable w/Connectors, 150" 7727-3No Unique Part NumberAirbus A330-301 (A46NM), A340-211, -2121997-07-06current
Astronics Luminescent Systems INCLead Assembly, Lamp Cable w/Connectors, 130" 7727-2No Unique Part NumberAirbus A340-211, -212, -3111997-07-06current
Astronics Luminescent Systems INCLead Assembly, Lamp Cable w/Connectors, 108" 7727-1No Unique Part NumberAirbus A340-211, -212, -3111997-07-06current
Continental Motors INCLead Assembly, Ignition Harness, Kit 10-400418-78OEM PartTeledyne Continental Motors IO-550-B, -C engines1997-07-06current
Continental Motors INCLead Assembly, Ignition Harness, Kit 10-400418-48OEM PartTeledyne Continental Motors IO-550-B, -C engines1997-07-06current

The first 150 of 192.

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.