91-25-03 R1: Main Landing Gear Brakes
FAA order 91-25-03 R1 is an airworthiness directive in force since December 31, 1991. The FAA's subject line: Main Landing Gear Brakes. It names Douglas DC-9, Mcdonnell Douglas DC-9: about 100 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: landing gear.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- The Boeing Company
- Models
- DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-9A), DC-9-32F (C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51
- On this site
- Douglas DC-9 7 registered
Mcdonnell Douglas DC-9 93 registered
Dates and paperwork
- In force since
- December 31, 1991
- Docket
- 91-NM-78-AD
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (2,135 characters)
91-25-03 R1 MCDONNELL DOUGLAS: Amendment 39-8136. Docket Number 91-NM-78-AD. \n\n\tApplicability: Model DC-9 series, including C-9 (military), airplanes equipped with Aircraft Braking System (ABS) brake part numbers identified in paragraph (a), of this AD, certificated in any category. \n\n\tCompliance: Required as indicated, unless previously accomplished. \n\n\tTo prevent the loss of main landing gear braking effectiveness, accomplish the following: \n\n\t(a)\tWithin 270 days after the effective date of this AD, inspect the landing gear brakes, having brake numbers listed below, for wear. Any brake worn more than the maximum wear limit specified below must be replaced, prior to further flight, with a brake within these limits. \n\n\nSeries\nAirplane\nABS Brake Part \nNumber\nMaximum Wear Limit\n (inches)\n DC-9-10\t\t\n9560746A\n0.3 \n\t\nB9560746A\n0.3 \n\t\t\t\n9560743\n0.3 \n\nA9560743\n0.3 \n\nB9560743\n0.3\n\n\n\nDC-9-20/30\t\t\n9560786\n0.3 \n\nA9560786\t\t\n0.3 \n\nB9560786\t\n0.3DC-9-30\t\t\n9560955\n0.3 \n\n9560788\t\n0.3 \n\nA9560788\t\n0.3 \n\nB9560788\t\n0.3 \n\n9560788-2/-3/-5/-6\t\n0.3 \n\n9560788-7\t\n0.7 \n\n\n\nDC-9-30/40/50\t\nB9560861\n0.3 \n\n9560861-1\t\n0.2 \n\n9560861-2\t\n0.3 \n\n9560861-3\t\n0.8 \n\t\n\t(b)\tWithin 270 days after the effective date of this AD, incorporate the maximum brake wear limits specified in paragraph (a) of this AD into the FAA-approved maintenance inspection program. \n\n\t(c)\tAn alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. \n\n\tNOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Los Angeles ACO. \n\n\t(d)\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with therequirements of this AD. \n\n\t(e)\tThis amendment (39-8136, AD 91-25-03 R1) is effective on December 31, 1991.
Related safety bulletins advice on the same designs, not orders
2019-02-19NE-19-03 · Escape Slide Maintenance Tasks and Intervals - JASC 2565
2014-11-24NM-15-03 · Flight Controls
2008-09-03NM-08-43 · Cabin Equipment/Furnishings - Seats
2006-07-27NM-06-57 · Reports of damage to airplanes and to property on the ground caused by blue or clear ice falling from airplanes.
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/91-25-03 R1.json · aircraft systems.