# AD 64-23-01: Rudder Control Link Arm Assembly

- 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- Superseded by: Nothing supersedes this AD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/F6DA1155D3FC8451862569920052E173.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/64-23-01

## The airworthiness directive

64-23-01 BOEING: Amdt. 819 Part 507 Federal Register October 14, 1964. Applies to Models 707 and 720 Series Aircraft.

Compliance required within the next 65 hours' time in service after the effective date of this AD, unless already accomplished.

  (a) With the rudder full right, inspect the installation of the rudder control link arm assembly P/N 65-12703 to ensure:

  (1) that clearance exists between the rudder control link arm assembly and the lower pivot clevis for that arm assembly;

  (2) that clearance exists between the arm assembly and the rudder spar web; and

  (3) that there is no evidence of previous interference.

  (b) If clearance does not exist, rework the existing parts in accordance with Boeing Alert Service Bulletins 2052 and 2052A, or in a manner approved by the Chief, Aircraft Engineering Division, FAA Western Region, or install new parts which provide clearance.

  (c) If there is evidence of previous interference, replace the lower arm assembly pivot bolt.

(Boeing Alert Service Bulletins 2052 and 2052A cover this same subject.)

This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated September 25, 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/64-23-01/models.md
Every aircraft: https://openairdocs.org/ad/64-23-01/aircraft.md

Its text cites no advisory circulars or STCs.

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