# AD 70-25-02: Anti Skid System

- 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: December 5, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-1122
- Registered aircraft: 8 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/812B5CA8C2363A8D862569C9006A1CF1.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-25-02

## The airworthiness directive

70-25-02 MCDONNELL DOUGLAS: Amendment 39-1122. DC-8 Airplanes. Applies to airplanes certificated in all categories equipped with Mark II and Mark III anti-skid system installation.

Compliance required within the next 50 hours' time in service after effective date of this AD, unless already accomplished.

To prevent misuse of ground spoilers, accomplish the following:

  (1) Add to Limitations Section of the FAA approved Airplane Flight Manual, the following Ground Spoiler Operation Limitation: DO NOT EXTEND GROUND SPOILERS DURING FLIGHT

  (2) Install a placard on the pedestal immediately below the word "spoiler" to read: "Deployment in Flight Prohibited, " or an equivalent installation approved by the Chief, Aircraft Engineering Division, FAA Western Region.

This amendment becomes effective December 5, 1970.

## 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/70-25-02/models.md
Every aircraft: https://openairdocs.org/ad/70-25-02/aircraft.md

Its text cites no advisory circulars or STCs.

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