AD 64-12-02

final rule

BOEING Model 727 Series Aircraft

AD Number
64-12-02
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft The Boeing Company 727-100 Series BOEING Model 727 Series Aircraft
aircraft The Boeing Company 727-100C Series BOEING Model 727 Series Aircraft
aircraft The Boeing Company 727-200 Series BOEING Model 727 Series Aircraft
aircraft The Boeing Company 727-200F Series BOEING Model 727 Series Aircraft
aircraft The Boeing Company 727 Series BOEING Model 727 Series Aircraft
aircraft The Boeing Company 727C Series BOEING Model 727 Series Aircraft

Unsafe Condition

Deflector doors of the thrust reversers may not fully close and the thrust reverser indicator light may not extinguish, leading to potential interference and damage to the locking pin.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Conduct a close visual inspection of each reverser deflector door and thrust reverser indicator light before each flight when reversers were used previously. Inspect the thrust reverser locking pin and operating light switch for proper function and correct any issues. Modify the thrust reverser lockout actuator rocker and rework the switch actuating tine as per Boeing Service Bulletin 78-10R1.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Initial compliance within 20 hours' time in service after May 19, 1964. Inspections under (b) and (c) within 20 and 150 hours' time in service after the effective date of this AD, respectively.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Boeing Model 727 Series Aircraft including 727-100, 727-100C, 727-200, 727-200F, 727 Series, and 727C Series.

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Thrust Reversers

Applicability Source Text

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AD Number:
64-12-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 727 Series Aircraft
Subject:
Thrust Reversers
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/29/1964
Make:
The Boeing Company
Model:
727-100 Series | 727-100C Series | 727-200 Series | 727-200F Series | 727 Series | 727C Series
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: 64-12-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   64-12-02

SUBJECT HEADING:   BOEING Model 727 Series Aircraft


ACTION:  

SUMMARY:  

DATES:   Effective August 29, 1964.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
64-12-02 BOEING: Amdt. 743 Part 507 Federal Register June 5, 1964. Applies to All Model 727 Series Aircraft.

Compliance required as indicated.

As an interim safety measure pending development and accomplishment of final corrective modifications, the following is required:

(a) Initial compliance required within 20 hours' time in service after May 19, 1964. Before each flight when the thrust reversers have been used on the previous flight, conduct a close visual inspection of each reverser to ascertain that each deflector door is in the fully closed position and that the thrust reverser indicator light is out. If the doors are not fully closed or if the indicator light is not out corrections shall be made before further flight. Upon compliance with (b) and (c) of this directive the visual inspection required by this paragraph may be discontinued.

(b) Within 20 hours' time in service after the effective date of this AD, unless previously accomplished, inspect the thrust reverser locking pin for freedom of action and the reverser operating light switch for proper adjustment and rigging. If the locking pin is bent or binding or if the operating light is out of adjustment, necessary correction shall be made before further flight. (Boeing Service Bulletin No. 78-10R1 covers this subject.)

(c) Within 150 hours' time in service after the effective date of this AD, unless already accomplished, modify the thrust reverser lockout actuator rocker, including rework of the switch actuating tine, in accordance with Boeing Service Bulletin No. 78-10R1.

NOTE. - The original issue of this bulletin did not include information for rework of the tine.
This rework is necessary to prevent interference and damage to the locking pin.

(d) Prior to compliance with (b) and (c) the inspection required by (a) shall also be made before flight when any reverser is again actuated on the ground during engine runup or during taxiing. Upon compliance with (b) and (c) further inspections under paragraph (a) need not be made.

(e) Approval of any equivalent means of compliance with this directive shall be processed through the Aircraft Engineering Division, FAA Western Region, Los Angeles, California.

(Boeing's telegram to all 727 operators dated May 20, 1964, covers this subject.)

This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated May 22, 1964, superseding the telegram dated May 18, 1964.

Revised July 7, 1964.

Revised August 29, 1964.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_64-12-02.html
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Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
64-12-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 727 Series Aircraft
Subject:
Thrust Reversers
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/29/1964
Make:
The Boeing Company
Model:
727-100 Series | 727-100C Series | 727-200 Series | 727-200F Series | 727 Series | 727C Series
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: 64-12-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   64-12-02

SUBJECT HEADING:   BOEING Model 727 Series Aircraft


ACTION:  

SUMMARY:  

DATES:   Effective August 29, 1964.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
64-12-02 BOEING: Amdt. 743 Part 507 Federal Register June 5, 1964. Applies to All Model 727 Series Aircraft.

Compliance required as indicated.

As an interim safety measure pending development and accomplishment of final corrective modifications, the following is required:

(a) Initial compliance required within 20 hours' time in service after May 19, 1964. Before each flight when the thrust reversers have been used on the previous flight, conduct a close visual inspection of each reverser to ascertain that each deflector door is in the fully closed position and that the thrust reverser indicator light is out. If the doors are not fully closed or if the indicator light is not out corrections shall be made before further flight. Upon compliance with (b) and (c) of this directive the visual inspection required by this paragraph may be discontinued.

(b) Within 20 hours' time in service after the effective date of this AD, unless previously accomplished, inspect the thrust reverser locking pin for freedom of action and the reverser operating light switch for proper adjustment and rigging. If the locking pin is bent or binding or if the operating light is out of adjustment, necessary correction shall be made before further flight. (Boeing Service Bulletin No. 78-10R1 covers this subject.)

(c) Within 150 hours' time in service after the effective date of this AD, unless already accomplished, modify the thrust reverser lockout actuator rocker, including rework of the switch actuating tine, in accordance with Boeing Service Bulletin No. 78-10R1.

NOTE. - The original issue of this bulletin did not include information for rework of the tine.
This rework is necessary to prevent interference and damage to the locking pin.

(d) Prior to compliance with (b) and (c) the inspection required by (a) shall also be made before flight when any reverser is again actuated on the ground during engine runup or during taxiing. Upon compliance with (b) and (c) further inspections under paragraph (a) need not be made.

(e) Approval of any equivalent means of compliance with this directive shall be processed through the Aircraft Engineering Division, FAA Western Region, Los Angeles, California.

(Boeing's telegram to all 727 operators dated May 20, 1964, covers this subject.)

This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated May 22, 1964, superseding the telegram dated May 18, 1964.

Revised July 7, 1964.

Revised August 29, 1964.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.