# AD 64-04-02: Stabilizer Attach 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
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Registered aircraft: 6 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/82662E0DCEB5A6F4862569920049C5AA.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/64-04-02

## The airworthiness directive

64-04-02 BOEING: Amdt. 687 Part 507 Federal Register February 20, 1964. Applies to All Airplanes Listed in Boeing Service Bulletin No. 942 On Which Service Bulletin No. 942 Has Not Been Accomplished.

Compliance required at the next terminal where adequate facilities and personnel are available but not to exceed 30 hours' time in service after the effective date of this AD, unless already accomplished in accordance with Boeing Alert Service Bulletin No. 1967 dated January 31, 1964.

Inspect both stabilizer center section rear spar upper attach fittings visually for cracks. Inspect all visible areas of the lug area (left and right side). Use a mirror to inspect outboard edge of lug that is sandwiched between lugs of mating part. Replace any center section having cracked parts before further flight.

This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated February 4, 1964.

## 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/64-04-02/models.md
Every aircraft: https://openairdocs.org/ad/64-04-02/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.