SDR CA020104012

Service difficulty report · Gyro · Boeing 737275

Difficulty date: November 30, 2001
Submitted: February 5, 2002
Operation: General aviation
Make and model: Boeing 737275
Aircraft time: 49,202 hours, 47,487 cycles
Engine: Pwa JT8D9A
System (JASC): 3421 · Attitude Gyro and Indicating System
Part: Gyro
Condition: Failed
Location: Cockpit
Part time: 49,328 hours, 52,715 cycles
Stage of operation: TO
How discovered: O
Nature of condition: O
Precautionary procedure: C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) ON TAKE OFF FROM EDMONTON, ELECTRICAL SPIKE MOMENTARILY FLAG CAPT.'S ADI AUTOPILOT, WHEN SELECTED ON TRIPPED, TRIED ONE MORE TIME AND WITH LIGHT PRESSURE ON ELEVATOR ON AUTOPILOT TRIPPED AGAIN. NUMBER 1 VERTICAL GYRO AND AIR DATA COMPUTER REPLACED. SYSTEM CHECKED SERVICEABLE.