# AD 91-03-10: Propeller Speed & Pitch Control System

- Type: Airworthiness directive
- Status: Current
- Products: EADS CASA C-212-CB, C-212-CC, C-212-CD, C-212-CE, C-212-CF, C-212-DE and C-212-DF
- Effective: March 11, 1991
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-6883
- Docket: 90-NM-17-AD
- Registered aircraft: 18 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E110AEB604FE856286256A1F00670A5E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/91-03-10

## The airworthiness directive

91-03-10 CASA: Amendment 39-6883. Docket No. 90-NM-17-AD. Applicability: Model C-212 series airplanes, certificated in any category.

Compliance: Required within 60 days after the effective date of this AD, unless previously accomplished.

To prevent reduced controllability of the airplane, accomplish the following:

A. Modify the propeller speed and pitch control system so that the control cannot be moved into reverse thrust while in flight, and so that the propeller pitch settings cannot be adjusted for ground operation while in flight, in accordance with CASA Service Bulletin 212-76-07, dated July 27, 1990, or in a manner approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate.

B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate.

NOTE: The request should be submitted directly to the Manager, Standardization Branch, ANM- 113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Standardization Branch, ANM-113.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Construcciones Aeronauticas S.A., Getafe, Madrid, Spain. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington.

Airworthiness Directive 91-03-10 supersedes AD 90-04-11. Amendment 39-6508.

This amendment (39-6883, AD 91-03-10) becomes effective on March 11, 1991.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A43EU](https://openairdocs.org/tcds/A43EU): Airbus Defense and Space S.A.; names 7 of 7 models: C-212-DE, C-212-CB, C-212-CE, C-212-CC, C-212-CF, C-212-DF, C-212-CD

## 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: 18 (18 by airframe model, 0 by engine model)
- Makers: Construcciones Aeronauticas 14, C A S A 4

Models with the most aircraft:

- [Construcciones Aeronauticas C-212-CC](https://openairdocs.org/model/construcciones-aeronauticas-c-212-cc): 12 aircraft (airframe model)
- [C A S A C-212-DF](https://openairdocs.org/model/c-a-s-a-c-212-df): 3 aircraft (airframe model)
- [C A S A C-212-CD](https://openairdocs.org/model/c-a-s-a-c-212-cd): 1 aircraft (airframe model)
- [Construcciones Aeronauticas C-212-CB](https://openairdocs.org/model/construcciones-aeronauticas-c-212-cb): 1 aircraft (airframe model)
- [Construcciones Aeronauticas C-212-CD](https://openairdocs.org/model/construcciones-aeronauticas-c-212-cd): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/91-03-10/models.md
Every aircraft: https://openairdocs.org/ad/91-03-10/aircraft.md

Its text cites no advisory circulars or STCs.

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