# AD 61-06-04: Rudder Lockout Cylinder Clevis

- Type: Airworthiness directive
- Status: Current
- Products: Boeing DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, DC-8-43, DC-8-51, DC-8-52, DC-8-53 and 15 more
- Effective: March 18, 1961
- Published: March 18, 1961
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Registered aircraft: 8 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D0DC46BDBCE8F756862569BC0073D7B1.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/61-06-04

## The airworthiness directive

61-06-04 DOUGLAS: Amdt. 267 Part 507 Federal Register March 18, 1961. Applies to All DC-8 Series Aircraft With 1,200 or More Hours' Time in Service on Clevis, P/N 2619862, In Rudder Hydraulic System.

Compliance required as indicated.

As a result of several reported instances of failed clevis, P/N 2619862, on the rudder lockout cylinder, the following must be accomplished.

  (1) Unless already accomplished within the last 20 hours' time in service, each clevis, P/N 2619862, in service which has not been inspected per (2) must be visually inspected for cracks prior to the next flight. The bolt attaching the clevis to the link to the gripper arm need not be removed for this inspection. "Cracked clevis must be replaced with a new clevis, P/N 2619862 or P/N 2772031 (Kit A of Douglas Service Bulletin 27-100) or FAA approved equivalent, prior to further flight."

  (2) Unless already accomplished within the last 140 hours' time in service, each clevis, P/N 2619862, whichremains in service following the inspection prescribed in (1) must be inspected with dye penetrant or magnetic particle method or equivalent within the next 20 hours' time in service. The bolt attaching the clevis to the link to the gripper arm must be removed for this inspection. "Cracked clevis must be replaced with a new clevis, P/N 2619862 or P/N 2772031 (Kit A of Douglas Service Bulletin 27-100) or FAA approved equivalent, prior to further flight." Clevis, P/N 2619862, retained in service must be reinspected at intervals not to exceed 160 hours' time in service. After clevis, P/N 2619862, is replaced with a redesigned clevis, P/N 2772031, inspections of replaced parts may then be made at normal inspection periods.

  (3) Unless already accomplished, a rudder creep rate check and necessary adjustment of the valve rod must be accomplished within the next 100 hours' time in service. "The adjustment and creep rate check is to be accomplished in accordance with Supplement No. 1dated February 27, 1961, to Douglas Alert Service Bulletin A27-100. Installation of new connecting rod assembly P/N 4772143-1 is optional (Kit B or Kit C of Douglas Service Bulletin 27-100).

"(4) Within the next 20 hours' time in service, unless already accomplished, install a placard adjacent to the rudder reversion light to read: 'WHEN LIGHT COMES ON SHUT OFF RUDDER HYDRAULIC POWER IMMEDIATELY,' or install warning placard in accordance with Kit D or Kit E of Douglas Service Bulletin 27-100.

"(Supplement No. 1 dated February 27, 1961, to Douglas Alert Service Bulletin A27-100 and Service Bulletin 27-100 dated May 12, 1961, covers this subject.)"

This directive becomes effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by individual telegrams dated March 3, 1961. (Material enclosed by quotation marks effective August 4, 1961.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 4A25](https://openairdocs.org/tcds/4A25): The Boeing Company; names 27 of 27 models: DC-8-41, DC-8-52, DC-8-61, DC-8-53, DC-8-51, DC-8-63, DC-8-11, DC-8-72F…

## 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: 8 (8 by airframe model, 0 by engine model)
- Makers: Douglas 5, Mcdonnell Douglas 3

Models with the most aircraft:

- [Douglas DC-8-73](https://openairdocs.org/model/douglas-dc-8-73): 2 aircraft (airframe model)
- [Douglas DC-8-73F](https://openairdocs.org/model/douglas-dc-8-73f): 2 aircraft (airframe model)
- [Mcdonnell Douglas DC-8-62](https://openairdocs.org/model/mcdonnell-douglas-dc-8-62): 1 aircraft (airframe model)
- [Mcdonnell Douglas DC-8-63](https://openairdocs.org/model/mcdonnell-douglas-dc-8-63): 1 aircraft (airframe model)
- [Mcdonnell Douglas DC-8-63F](https://openairdocs.org/model/mcdonnell-douglas-dc-8-63f): 1 aircraft (airframe model)
- [Douglas DC-8-72](https://openairdocs.org/model/douglas-dc-8-72): 1 aircraft (airframe model)

All 6 models: https://openairdocs.org/ad/61-06-04/models.md
Every aircraft: https://openairdocs.org/ad/61-06-04/aircraft.md

Its text cites no advisory circulars or STCs.

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