# AD 78-01-01: Sensors

- Type: Airworthiness directive
- Status: Current
- Products: Boeing DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A, KDC-10), DC-10-40, DC-10-40F, L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3 and Angle of attack sensors
- Effective: January 30, 1978
- Superseded by: Nothing supersedes this AD
- Product type: Appliance
- Amendment: 39-3110
- Registered aircraft: 30 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0644DE6A3DDFCC7D86256A33006FE5B3.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/78-01-01

## The airworthiness directive

78-01-01 SUNDSTRAND: Amendment 39-3110. Applies to all angle of attack sensors, P/Ns 965-4020-003 and 965-4020-004 manufactured under Technical Standard Order (TSO-C54) authorization installed in McDonnell-Douglas DC-10 series airplanes and Lockheed L-1011 series airplanes, respectively. Compliance time required as indicated.

A. Prior to July 1, 1978, unless already accomplished, modify the Sundstrand probe P/N 965-4020-003 in accordance with Sundstrand Service Bulletins No. 2 (Doc. No. 012-0125-102), Rev. 2, dated August 1977 and No. 3 (Doc. No. 012-0125-103), Rev. 2, dated August 1977, or subsequent FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.

B. Prior to January 1, 1979, unless already accomplished: (1) modify the self-test circuit in the Sundstrand probe P/N 965-4020-004 (345D-2), in accordance with Collins-Lear Siegler, Inc. Service Bulletin No. 345D-2-22-03 dated February 15, 1975; and (2) modify the pressure pickoff assembly in the Sundstrand probe P/N 965-4020-004 (345D-2), in accordance with the Collins-Lear Siegler, Inc. Service Bulletin No. 345D-2-22-06 to be released, or subsequent FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.

The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1).

This amendment becomes effective January 30, 1978.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A22WE](https://openairdocs.org/tcds/A22WE): The Boeing Company; names 7 of 11 models: DC-10-40, DC-10-10F, DC-10-30, DC-10-30F (KC-10A KDC-10), DC-10-10, DC-10-40F, DC-10-15
- [TCDS A23WE](https://openairdocs.org/tcds/A23WE): Lockheed Martin Corporation; names 4 of 4 models: L-1011-385-1-14, L-1011-385-3, L-1011-385-1, L-1011-385-1-15

## 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: 30 (30 by airframe model, 0 by engine model)
- Makers: Mcdonnell Douglas 13, Douglas 8, Mcdonnell-Douglas 5, Lockheed 4

Models with the most aircraft:

- [Mcdonnell Douglas DC-10-30F](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30f): 12 aircraft (airframe model)
- [Douglas DC-10-40](https://openairdocs.org/model/douglas-dc-10-40): 6 aircraft (airframe model)
- [Mcdonnell-Douglas DC-10-30](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30): 5 aircraft (airframe model)
- [Lockheed L-1011-385-1](https://openairdocs.org/model/lockheed-l-1011-385-1): 2 aircraft (airframe model)
- [Douglas DC-10-30F](https://openairdocs.org/model/douglas-dc-10-30f): 1 aircraft (airframe model)
- [Mcdonnell Douglas DC-10-30F (KDC-10)](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30f-kdc-10): 1 aircraft (airframe model)
- [Douglas DC-10-40F](https://openairdocs.org/model/douglas-dc-10-40f): 1 aircraft (airframe model)
- [Lockheed L-1011-385-1-15](https://openairdocs.org/model/lockheed-l-1011-385-1-15): 1 aircraft (airframe model)
- [Lockheed L-1011-385-3](https://openairdocs.org/model/lockheed-l-1011-385-3): 1 aircraft (airframe model)

All 9 models: https://openairdocs.org/ad/78-01-01/models.md
Every aircraft: https://openairdocs.org/ad/78-01-01/aircraft.md

Its text cites no advisory circulars or STCs.

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