# SAIB ACE-96-03: 

- Type: Special airworthiness information bulletin (advisory, not mandatory)
- Status: Current
- Revision: 0
- Issued: June 11, 1996
- Products: Russian Sukhoi SU-29 and SU-31
- Product type: Aircraft, Small Airplane
- PDF: https://openairdocs.org/files/sha256/ed/90/ed902eab11cd82480dedb49d618b0855e71c8becb9ee1833c82b3a595dc79119
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/86AAD4CB4FC5471E8625721F0052EC81.0001
- Page: https://openairdocs.org/saib/ACE-96-03

## Text

**SPECIAL**

**AIRWORTHINESS**

**INFORMATION**

**BULLETIN**

**AIRCRAFT CERTIFICATION SERVICE 800 INDEPENDENCE AVENUE, S.W.**

**WASHINGTON, DC 20591**

U.S. Department of Transportation Federal Aviation Administration

No. ACE-96-03 June 11, 1996

Published by: FAA, AFS-613, P.O. Box 26460, Oklahoma City, OK 73125 This is issued for informational purposes only and any recommendation for corrective action is not mandatory.

INTRODUCTION:

The purpose of this Special Airworthiness Info rmation Bulletin is to advise registered owners/operators of Russian Sukhoi SU-29 and SU- 31 model aircraft of the need to review the National Transportation Safety Board (NTSB), Safety Recommendation, dated May 31, 1996.

BACKGROUND:

The Small Airplane Directorate, Aircraft Ce rtification Service, of the Federal Aviation Administration, has recently received a Safety Recommendation from the NTSB for the Russian Sukhoi SU-29 and SU-31 acrobatic aircraft. This information may already have been provided to you per Manufacturer’s and Pompano Air Center’s service information.

As noted, the Recommendation was the result of a r ecent fatal accident in a Sukhoi SU-29 aircraft in which it is suspected that a bolt migrated out dur ing flight in the elevator/aileron control system.

Loss of a cotter pin, if it had not been properly in stalled in the castellated nut, would possibly have allowed the nut to back off the bolt, allowing the bolt to fall out.

Due to the certification of these aircraft in th e Experimental Category, the FAA currently does not plan to issue an Airworthiness Directive.

RECOMMENDATION:

The NTSB Safety Recommendation is enclosed for your information as a result of the accident.

This information concerns a complete inspection of the flight control system to be accomplished in accordance with the instructions contained in the enclosed Safety Recommendation by a qualified aircraft mechanic holding the appropriate FAA Desi gnation. The inspection is to insure that the flight control system is properly assembled and that all cotter pins are properly installed.

FOR FURTHER INFORMATION CONTACT:

Roman T. Gabrys, Aerospace Engineer, FAA, Project Support, ACE-112, Small Airplane Directorate, 601 East 12th Street, Kansas City, MO, 64106, telephone (816) 426-6934.

## Registered aircraft it may concern (OpenAirDocs)

Registry models matched by make and model, the same way as ADs, most registered aircraft first.

- [Sukhoi SU-29](https://openairdocs.org/model/sukhoi-su-29): 20 registered aircraft (airframe model)
- [Sukhoi SU-31](https://openairdocs.org/model/sukhoi-su-31): 6 registered aircraft (airframe model)

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