# SAIB ACE-99-16: 

- Type: Special airworthiness information bulletin (advisory, not mandatory)
- Status: Current
- Revision: 0
- Issued: April 2, 1999
- Products: Zaklad Remontow i Produkcji MDM-1 "Fox"
- Product type: Aircraft, Glider
- PDF: https://openairdocs.org/files/sha256/94/7f/947f18c45dfdb504b7d6087fb497ca7556b890b6c0e3b4463a87163ec95b1114
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4AE24E836850470D8625721F0052EC56.0001
- Page: https://openairdocs.org/saib/ACE-99-16

## 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-99-16 April 2, 1999

Published by: FAA, AFS-610, 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 Information Bulletin (SAIB) is to provide safety information to Zaklad Remontow i Produkcji, Model MDM-1 “Fox” sailplane owners on the following:

• Mandatory Bulletin No. BO 13/99. A correction to the Technical Service Manual effecting the aft C.G. location.

• Mandatory Bulletin No. BO 14/99. A correction to the Technical Service Manual effecting the elevator control surface mass balance.

These two bulletins are being sent attached to this SAIB.

Background:

Mandatory Bulletin No. BO 13/99 identifies inaccur acies in the weight and balance formulas provided in the Technical Service Manual which coul d result in exceeding the aft C.G. limit. This bulletin also provides a modification to incorporate heavier ballast weights.

Mandatory Bulletin No. BO 14/99 id entifies inaccuracies in the Technical Service Manual relating to elevator control surface mass balancing. Th is bulletin provides the appropriate balancing weights as well as a sketch and description of method for installation of these weights on the elevator.

General Information:

The FAA provides this information as a courtesy to operators of the MDM-1 “Fox” owners/operators because this is a known safety issue. The FAA does not issue Airworthiness Directives for non-type certificated sailplanes. This safety issue will not be tracked or enforced by the FAA. Furthermore, the FAA w ill not use an SAIB to track all safety related items for non-type certificated products.

Further Information Contact:

Brian Hancock; Project Officer; FAA, Small Airplane Directorate; 1201 Walnut, Suite 900;

Kansas City, Missouri, 64106; telephone (816) 426-6932, facsimile (816) 426-2169.

## Registered aircraft it may concern (OpenAirDocs)

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

- [Zaklady Lotnicze Marganski MDM-1 FOX](https://openairdocs.org/model/zaklady-lotnicze-marganski-mdm-1-fox): 4 registered aircraft (airframe model)

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