SAIB NE-06-72

SPECIAL AIRWORTHINESS

INFORMATION BULLETIN

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

NE-06-72 September 29, 2006 http://www.faa.gov/aircraft/safety/alerts/SAIB This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin (SAIB) alerts you, owners, operators, Repair Stations, and Principal Maintenance Inspectors in FAA's FSDOs, that we have determined there are inadequate aircraft instrumentation markings, which aren’t fully compliant with FAA regulations for use as primary instruments. The Instrumentation is from Insight Instrument Corporation- Graphic Engine Monitors (G.E.M.) models (listed below) installed via Supplemental Type Certificate (STC) SA01860NY, dated April 19, 2004.

Table 1 - Affected Products Manufacturer Model / P/N GEM-610 / P/N 601- 001 Mod “C” Insight Instrumentation Corporation GEMINI 1200 / P/N 1200-001 Mod “C”

Background

The subject instruments installed via STC SA01860NY aren’t marked in accordance with 14 CFR Part 23, § 23.1549 requirements for primary instruments as follows:

Instrument – Range/Limit Isn’t marked with… normal operating range green arc or green line takeoff and precautionary range yellow arc or yellow line maximum safe operating limit red radial or red line

The lack of adequate markings required of primary instruments may result in operating the aircraft engine(s) outside of their type-certificated limits, which may result in an unsafe condition.

Recommendations

We recommend you inspect the aircraft log book and/or instrumentation package to determine if the instrumentation is from Insight Instrument Corporation-Graph Engine Monitor (G.E.M.)

Model GEM 610 or GEMINI 1200 installed via Supplemental Type Certificate (STC) SA01860NY dated April 19, 2004. If so, we don’t authorize their usage as primary instruments.

We have amended STC SA01860NY, dated May 31, 2006, for instruments GEM 610, P/N 610-001 Mod “D” and GEMINI 1200, P/N 1200- 001 Mod “D”, which are fully compliant with FAA regulations and must be used as primary engine instruments. This STC is available from our Regulatory and Guidance Library (RGL) on the internet at: www.faa.gov

We urge you to contact Insight Instrument Corp for additional information if you are a customer with non-compliant instrumentation (see table 1).

For Service Information Contact

Insight Instrument Corp, Customer Support, Box 122, Fort Erie, Ontario, Canada L2A 5M6;

phone: (905) 871-0733; fax: (905)-871-5460.

For Further Information Contact

Rocco Viselli, Aerospace Engineer, FAA Engine Certification Office, ANE-171, 1600 Stewart Ave., Westbury, New York 11590; phone:

516-228-7331; fax: 516-794-5531;

email: rocco.viselli@faa.gov.