# AD 90-10-10: Thrust Reverser Bell Crank

- Type: Airworthiness directive
- Status: Current
- Products: Dassault Mystere-Falcon 900
- Effective: June 15, 1990
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-6598
- Docket: 89-NM-275-AD
- Registered aircraft: 129 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/922D8562ACD8148386256A1F006A57E3.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/90-10-10

## The airworthiness directive

90-10-10 AVIONS MARCEL DASSAULT-BREGUET AVIATION (AMD-BA): Amendment 39-6598. Docket No. 89-NM-275-AD. Applicability: All Model Mystere Falcon 900 series airplanes equipped with thrust reverser synchronizing bell crank, Part Number F900HD3200240A2, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent failure of the thrust reverser door actuating system, accomplish the following:

A. Prior to the accumulation of 3,000 landings on the thrust reverser synchronizing bell crank, Part Number F900HD3200240A2, or within the next 250 landings after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 3,000 landings, replace the bell crank, which is life limited to 3,000 landings, in accordance with the manufacturer's maintenance manual.

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, Northwest Mountain Region.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it 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 Falcon Jet Corporation, Customer Support Department, Teterboro Airport, Teterboro, New Jersey 07608. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington.

This amendment (39-6598, AD 90-10-10) becomes effective on June 15, 1990.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A46EU](https://openairdocs.org/tcds/A46EU): Dassault Aviation; names 1 of 3 models: Mystere-Falcon 900

## 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: 129 (129 by airframe model, 0 by engine model)
- Makers: Dassault-Breguet 73, Dassault 52, Avions Marcel Dassault 4

Models with the most aircraft:

- [Dassault-Breguet MYSTERE FALCON 900](https://openairdocs.org/model/dassault-breguet-mystere-falcon-900): 73 aircraft (airframe model)
- [Dassault MYSTERE FALCON 900](https://openairdocs.org/model/dassault-mystere-falcon-900): 52 aircraft (airframe model)
- [Avions Marcel Dassault MYSTERE FALCON 900](https://openairdocs.org/model/avions-marcel-dassault-mystere-falcon-900): 4 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/90-10-10/models.md
Every aircraft: https://openairdocs.org/ad/90-10-10/aircraft.md

Its text cites no advisory circulars or STCs.

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