AD 69-17-01

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AD Number:
69-17-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BOEING 737 and MCDONNELL DOUGLAS DC-9 Airplanes
Subject:
Auxiliary Power Unit
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
The Boeing Company
Model:
737-100 Series | 737-200 Series | 737-200C Series | 737-300 Series | 737-400 Series | 737-500 Series...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Superseded AD: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Superseded By: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: 69-17-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-819

AD NUMBER:   69-17-01

SUBJECT HEADING:   Airworthiness Directives; BOEING 737 and MCDONNELL DOUGLAS DC-9 Airplanes

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
69-17-01 MCDONNELL DOUGLAS DC-9 and BOEING 737: Amdt. 39-819. Applies to DC-9 airplanes equipped with AiResearch Model GTCP85-98D Auxiliary Power Unit (APU) Serial Numbers listed in AiResearch Telegraphic Bulletin No. 49A1761 dated July 1, 1969, or later FAA approved revision, and to Boeing 737 airplanes equipped with AiResearch Model GTCP85-129 APU serial numbers listed in AiResearch Telegraphic Bulletin No. 49A1760 dated July 1, 1969, or later FAA approved revision.

Compliance required as indicated unless already accomplished.

Because of possible failure of the second stage impeller blades, the auxiliary power unit shall not be used as an alternate electric power source in place of a main engine driven generator until deficient impellers have been replaced. Pending replacement of the auxiliary power unit impeller, accomplishment of the following is required.

1. Within 10 hours time in service after the effective date of this Airworthiness Directive, install a placard in full view of the pilot to read:

Both main engine driven generators must be operative for takeoff. Only during in-flight emergency may the auxiliary power unit be used as an alternate electric power source.

2. This placard may be removed when the APU is replaced with an APU having satisfactory impeller blades, or when the APU is modified to incorporate an impeller with satisfactory impeller blades in accordance with the above AiResearch Telegraphic Service Bulletins.

NOTE: Compliance with the inspection and speed reduction adjustments in these bulletins is optional.

This amendment becomes effective upon publication in the FEDERAL REGISTER for all persons except those to whom it was made effective immediately by telegram dated July 3, 1969.


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