# AD 65-06-03: Aft Elevator Quadrant

- 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: April 16, 1965
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-49
- Registered aircraft: 6 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2AB6959A458C17188625682E0054158E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/65-06-03

## The airworthiness directive

65-06-03 BOEING: Amdt 39-49 Part 39 Federal Register March 17, 1965. Applies to Models 707 and 720 Aircraft with the Serial Numbers Listed in Boeing Service Bulletin No. 2029. Compliance required as indicated. Cracks have recently been discovered on two airplanes in the aft elevator control quadrant, P/N 50-3119, around the upper two bolts, P/N NAS 1105, which attach the quadrant to the elevator control torque tube. In both instances, Boeing Service Bulletin No. 1259 had not been accomplished, and an interference fit existed between the quadrant and torque tube. As a result of these cracks, the following or an equivalent approved by the Aircraft Engineering Division, FAA Western Region, shall be accomplished: (a) Within the next 600 hours' time in service after the effective date of this AD, unless already accomplished within the last 600 hours' time in service, and thereafter at periods not to exceed 1,200 hours' time in service from the last inspection, inspect by eddy current or fluorescent dye penetrant the aft elevator quadrant, P/N 50-3119, in accordance with paragraph 3.c. of Service Bulletin No. 2029 or later FAA-approved revisions for evidence of cracks in the upper hub and in the vicinity of the two upper bolts which attach the quadrant to the elevator control torque tube. (b) If a crack is found, replace the elevator control quadrant with one of the same part number before further flight. The inspections in (a) also apply to the replacement part. (c) Within the next 6,000 hours' time in service after the effective date of this AD, accomplish rework and dimensional checks in accordance with paragraph 3 of Boeing Service Bulletin 2029 or later FAA-approved revisions. (d) When the rework and dimensional checks required by (c) are accomplished, the repetitive inspections specified in (a) may be discontinued. (e) Upon request of an operator, an FAA maintenance inspector, subject to prior approval of the Chief, Aircraft Engineering Division, FAA Western Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator. (Boeing Service Bulletin No. 2029 covers this same subject.) This directive effective April 16, 1965.

## 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/65-06-03/models.md
Every aircraft: https://openairdocs.org/ad/65-06-03/aircraft.md

Its text cites no advisory circulars or STCs.

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