# SAIB CE-05-11: 

- Type: Special airworthiness information bulletin (advisory, not mandatory)
- Status: Current
- Revision: 0
- Issued: November 2, 2004
- Products: United Instrument Altimeters
- Product type: Appliance
- PDF: https://openairdocs.org/files/sha256/43/03/4303f8ccaad281d08ddcb50fabf466fc4262be864b34e49c53a7548587c0c304
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1DA0740524BCC8A68625721F0052EB6F.0001
- Page: https://openairdocs.org/saib/CE-05-11

## Text

**SPECIAL**

**AIRWORTHINESS**

**INFORMATION**

**BULLETIN**

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

CE-05-11 November 2, 2004 www.faa.gov/certification/aircraft This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin (SAIB) alerts you, owners and operators of airplanes with one or more United Instrument, Inc. altimeters installed, of a potential failure condition of these altimeters.

This SAIB also informs you of an easily accomplished check of the altimeter to insure that this condition does not go undetected.

Background

We have received reports that a small number of United Instruments, Inc. altimeters have failed, or have been miss-assembled during maintenance that causes the barometric dial and the altitude pointers to become desynchronized.

This could result in the altimeter indicating an incorrect altitude.

Recommendation

We recommend that you utilize the following check each time the altimeter barometric pressure dial is adjusted:

• When adjusting the barometric pressure dial, make sure that the altitude indication pointers and the barometric pressure dial remain synchronized. If they do not remain synchronized, you should repair the altimeter prior to further flight.

For Further Information Contact

Michael Imbler , Senior Aerospace Engineer, FAA Wichita ACO:, 1801 Airport Rd, Room 100, Wichita, KS, 67209, phone: (316) 946- 4147; email: michael.imbler@faa.gov

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