AD 90-09-08

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AD Number:
90-09-08
Document Type:
AD Final Rules
Docket Number:
89-ANE-28
Subject Heading:
Airworthiness Directives; IPECO TSO-C39a Crew Seats
Subject:
Crew Seats
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
05/29/1990
Make:
The Boeing Company | Bombardier Inc. | IPECO | Viking Air Limited
Model:
737-100 Series | 737-200 Series | 737-200C Series | 737-300 Series | 737-400 Series | 737-500 Series...Show more
Product Type:
Appliance
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 90-09-08
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   89-ANE-28

AMENDMENT:   39-6486

AD NUMBER:   90-09-08

SUBJECT HEADING:   Airworthiness Directives; IPECO TSO-C39a Crew Seats

ACTION:  

SUMMARY:  

DATES:   Effective May 29, 1990.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
90-09-08 IPECO: Amendment 39-6486. Docket No. 89-ANE-28.

Applicability: IPECO TSO-C39a crew seats, as follows:


Seat Part Number	Serial no. effectivity	Installed in but not limited to
3A090-0021-01-2	up to and including	Boeing 737
3A090-0022-01-2	11009	
3A090-0021-02-2		
3A090-0022-02-2		
		
3A090-0019-01-1	up to and including	Boeing 737
3A090-0020-01-1	11115	
		
3A090-0015-01-1	up to and including	Boeing 757, 767
3A090-0016-01-1	11143	
		
3A090-0025-01-1	up to and including	Boeing 757, 767
3A090-0026-01-1	11054	
		
3A090-0053-01-1	up to and including	Boeing 747-400
3A090-0054-01-1	11105	
		
3A090-0027-01-1	up to and including	Boeing 747
3A090-0028-01-1	11072	
		
3A102-0003-01-1	up to and including	Boeing 747-400
	11041	
		
3A090-0055-01-1	up to and including	Boeing 747-400
3A090-0056-01-1	11062	
		
3A103-0003-01-1	up to and including	Boeing 747-400
	10607	
		
3A090-0017-01-1	up to and including	Boeing 747
3A090-0018-01-1	10100	
		
3A090-0065-01-1	up to and including	Boeing 747-400
3A090-0066-01-1	11635	
		
3A118-0003-01-1	up to and including	DeHavilland
3A118-0004-01-1	11580	DHC-7 and DHC-8

Compliance: Required as indicated, unless already accomplished. To prevent failure of the seat back structure, accomplish the following:

(a) Within the next 30 days after the effective date of this AD, unless already accomplished within the last 100 days and, thereafter, at intervals not to exceed 130 days from the last inspection, visually inspect the seat assembly as follows:

(1) Remove seat pan cushion and back cushion from the seat assembly. Adjust the lumbar mechanism to the fully up, fully back position. Recline seat back to full recline.

(2) By looking through the lightening holes in the pan and back structure with a flashlight, examine the base of the back structure in the area where it attaches to the reclining mechanism. This area can be identified by the bracket at the base of the back structure. Return the seat back to its upright position and also examine the base of the back structure from the rear of the seat.

(3) If any crack or deformation of the seat back structure is found, replace the seat assembly with a serviceable unit before further flight.

(4) When the repairs and modifications required by paragraph (b) have been accomplished, the repetitive visual inspections may be terminated.

(b) Within the next 15 months after the effective date of this AD, perform the repairs and modifications of the IPECO seat assemblies in accordance with the following service bulletins (SB):

IPECO SB No.	Applicable IPECO
seat part numbers
A001-25-29	3A090-0021-01-2
	3A090-0022-01-2
	3A090-0021-02-2
	3A090-0022-02-2
	
A001-25-30	3A090-0019-01-1
	3A090-0020-01-1
	
A001-25-31	3A090-0015-01-1
	3A090-0016-01-1
	
A001-25-32	3A090-0025-01-1
	3A090-0026-01-1
	
A001-25-33	3A090-0053-01-1
	3A090-0054-01-1
	
A001-25-34	3A090-0027-01-1
	3A090-0028-01-1
	
A001-25-35	3A102-0003-01-1
	
A001-25-36	3A090-0055-01-1
	3A090-0056-01-1
	
A001-25-37	3A103-0003-01-1
	
A001-25-38	3A090-0017-01-1
	3A090-0018-01-1
	
A001-25-39	3A090-0065-01-1
	3A090-0066-01-1
	
A001-25-40	3A118-0003-01-1
	3A118-0004-01-1

(c) Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished.

(d) Upon submission of substantiating data by an owner or operator through an FAA Airworthiness Inspector, an alternate method of compliance with the requirements of this AD or adjustments to the compliance schedule specified in this AD may be approved by the Manager, Boston Aircraft Certification Office, Engine and Propeller Directorate, Aircraft Certification Service, Federal Aviation Administration, 12 New England Executive Park, Burlington, Massachusetts 01803.

The repair and modification procedures shall be done in accordance with IPECO SB No. A001-25-29, Issue No. 2, pages 1 and 2 dated April 28, 1989, and pages 3 through 18 inclusive, dated August 25, 1988; IPECO SB No. A001-25-30, Issue No. 2, pages 1 and 2 dated April 28, 1989, and pages 3 through 18 inclusive, dated September 9, 1988; and IPECO SB Nos. A001-25-31 through A001-25-40 inclusive, all Issue No. 2, pages 1 and 2 dated April 28, 1989, and pages 3 through 18 inclusive, dated September 13, 1988. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from IPECO Inc., 15201 South Prarie Avenue, Lawndale, California 90260. Copies may be inspected at the Regional Rules Docket, Office of the Assistant Chief Counsel, Federal Aviation Administration, New England Region, 12 New England Executive Park, Room 311, Burlington, Massachusetts 01803, or at the Office of the Federal Register, 1100 L Street, NW, Room 8301, Washington, DC 20591.

This amendment (39-6486, AD 90-09-08) becomes effective on May 29, 1990.

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