# AD 88-03-07: Inspect Fuel Lines

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 340, 340A and 414
- Effective: February 10, 1988
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-5841
- Registered aircraft: 949 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/09B18F03CBBD281D86256A4F004596E6.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/88-03-07

## The airworthiness directive

88-03-07 CESSNA: Amendment 39-5841. Applies to Cessna Models 340, 340A (Serial Numbers 340-0001 thru 340A1817) and 414 (Serial Numbers 414-0001 thru 414-0965) airplanes certificated in any category.

Compliance: Required within the next 50 hours time-in-service after the effective date of this AD, unless already accomplished.

To detect and correct fuel line chafing or fuel leaks behind the engine firewall, accomplish the following:

  (a) Remove both firewall access covers and inspect the crossfed fuel lines for evidence of chafing in accordance with Cessna Service Bulletin No. MEB87-7, Revision 1, dated January 8, 1988.

  (b) If, as a result of the inspection required by paragraph (a), evidence of chafing is found that exceeds the criteria specified in Cessna Service Bulletin, No. MEB 87-7, Revision 1, dated January 8, 1988, prior to further flight, replace the affected line with an airworthy part.

  (c) In addition to the inspection required in paragraph (a), modify the firewall stiffener flanges and fuel lines in accordance with Cessna Service bulletin No. MEB87-7, Revision 1, dated January 8, 1988.

  (d) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.

  (e) An equivalent means of compliance with this AD may be used if approved by the Manager, Wichita Aircraft Certification Office, FAA, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209.

All persons affected by this directive may obtain copies of the document(s) referred to herein upon request to Cessna Aircraft Company, Customer Service, P.O. Box 7704, Wichita, Kansas 67277; or may examine the document(s) at the FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.

This amendment 39-5841 supersedes AD 87-23-11, Amendment 39-5782, published in the Federal Register on November 30, 1987, (52 FR 45451).

This amendment 39-5841 becomes effective on February 10, 1988.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 3A25](https://openairdocs.org/tcds/3A25): Textron Aviation Inc.; names 2 of 11 models: 340A, 340
- [TCDS A7CE](https://openairdocs.org/tcds/A7CE): Textron Aviation Inc.; names 1 of 16 models: 414

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 949 (949 by airframe model, 0 by engine model)
- Makers: Cessna 949

Models with the most aircraft:

- [Cessna 340A](https://openairdocs.org/model/cessna-340a): 543 aircraft (airframe model)
- [Cessna 414](https://openairdocs.org/model/cessna-414): 242 aircraft (airframe model)
- [Cessna 340](https://openairdocs.org/model/cessna-340): 164 aircraft (airframe model)

All 4 models: https://openairdocs.org/ad/88-03-07/models.md
Every aircraft: https://openairdocs.org/ad/88-03-07/aircraft.md

Its text cites no advisory circulars or STCs.

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