# AD 68-23-02: Fin-body Terminal Fittings

- Type: Airworthiness directive
- Status: Current
- Products: Boeing 707-100 Long Body, 707-100B Long Body, 707-100B Short Body, 707-200, 707-300 Series, 707-300B Series, 707-300C Series, 707-400 Series, 720 Series and 720B Series
- Effective: December 9, 1968
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-678
- Registered aircraft: 6 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/12DB610A41874BE88625682E006369BD.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/68-23-02

## The airworthiness directive

68-23-02 BOEING: Amendment 39-678. Applies to Model 707 and 720 Series aircraft listed in Boeing Service Bulletin 2399, Revision 8.

Compliance required as indicated unless already accomplished.

  (1) Inspect the fin-body terminal fittings, P/N 5-84487, on all airplanes listed in the Airplanes Affected section of Boeing Service Bulletin No. 2399, Revision 8, or later FAA approved revision. Perform inspections in accordance with Accomplishment Instructions, Parts I and II, and perform preventative modifications in accordance with Part V of that Service Bulletin within the times listed in Inspection Schedules I, II, and III of that Service Bulletin. The repetitive inspection schedule in Inspection Schedule I can be disregarded if fittings with 3500- 7000 hours time in service are found by inspection to be uncracked and are reworked in accordance with Part IV of the Service Bulletin.

  (2) Rework cracked fittings in accordance with Part III of Service Bulletin No. 2399, Revision 8, or later FAA-approved revision; or replace with a new part of the same part number; or install a new terminal fitting and bulkhead assembly in accordance with Boeing Service Bulletin No. 2422, or later FAA-approved revision, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.

  (3) Replace each fitting with a new part of the same part number within the times listed in Inspection Schedule III of Service Bulletin No. 2399, Revision 8, or later FAA-approved revision; or install a new terminal fitting and bulkhead assembly in accordance with Boeing Service Bulletin No. 2422 or after FAA-approved revision, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.

This AD supersedes AD 66-16-01, Amendment 39-253, published in the Federal Register June 25, 1966, as amended by 39-295, as published in the Federal Register October 26, 1966.

This amendment becomes effective December 9, 1968.

## Affected data sheets (3) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 4A21](https://openairdocs.org/tcds/4A21): The Boeing Company; names 4 of 4 models: 707-100B Short Body, 707-200, 707-100 Long Body, 707-100B Long Body
- [TCDS 4A26](https://openairdocs.org/tcds/4A26): The Boeing Company; names 4 of 4 models: 707-300B Series, 707-400 Series, 707-300 Series, 707-300C Series
- [TCDS 4A28](https://openairdocs.org/tcds/4A28): The Boeing Company; names 2 of 2 models: 720B Series, 720 Series

## 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: 6 (6 by airframe model, 0 by engine model)
- Makers: Boeing 6

Models with the most aircraft:

- [Boeing 707-338C](https://openairdocs.org/model/boeing-707-338c): 2 aircraft (airframe model)
- [Boeing 707-368C](https://openairdocs.org/model/boeing-707-368c): 1 aircraft (airframe model)
- [Boeing 707-321B](https://openairdocs.org/model/boeing-707-321b): 1 aircraft (airframe model)
- [Boeing 707-323B](https://openairdocs.org/model/boeing-707-323b): 1 aircraft (airframe model)
- [Boeing 707-351B](https://openairdocs.org/model/boeing-707-351b): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/68-23-02/models.md
Every aircraft: https://openairdocs.org/ad/68-23-02/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.