AD 91-25-03 R1

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AD Number:
91-25-03 R1
Document Type:
AD Final Rules
Docket Number:
91-NM-78-AD
Subject Heading:
Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9 (Military) Airplanes
Subject:
Main Landing Gear Brakes
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/31/1991
Make:
The Boeing Company
Model:
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 (...Show more
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 91-25-03 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   91-NM-78-AD

AMENDMENT:   39-8136

AD NUMBER:   91-25-03 R1

SUBJECT HEADING:   Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9 (Military) Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 31, 1991.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
91-25-03 R1 MCDONNELL DOUGLAS: Amendment 39-8136. Docket Number 91-NM-78-AD.

Applicability: 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.

Compliance: Required as indicated, unless previously accomplished.

To prevent the loss of main landing gear braking effectiveness, accomplish the following:

(a) Within 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.


Series
Airplane	
ABS Brake Part
Number
	
Maximum Wear Limit
(inches)

DC-9-10	9560746A	0.3
	B9560746A	0.3
	9560743	0.3
	A9560743	0.3
	B9560743	0.3
		
DC-9-20/30	9560786	0.3
	A9560786	0.3
	B9560786	0.3
		
DC-9-30	9560955	0.3
	9560788	0.3
	A9560788	0.3
	B9560788	0.3
	9560788-2/-3/-5/-6	0.3
	9560788-7	0.7
		
DC-9-30/40/50	B9560861	0.3
	9560861-1	0.2
	9560861-2	0.3
	9560861-3	0.8

(b) Within 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.

(c) An 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.

NOTE: 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.

(d) Special 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 the requirements of this AD.

(e) This amendment (39-8136, AD 91-25-03 R1) is effective on December 31, 1991.


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