SDR 98ZZZX561

Service difficulty report · Spring · Boeing 737*

Difficulty date
January 2, 1998
Submitted
March 26, 2000
Operation
General aviation
Filed by
IU6R626N
Aero Controls, LLC
Make and model
Boeing 737*
Part
Spring
Part number
69778551
Condition
Broken
Location
Stab Trim Grbox
Part time
13,748 hours
Component
654997025
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

INSPECTION FOUND STABILIZER TRIM GEARBOX WITH FRACTURED SPRINGS. SUSPECT IMPROPER HEAT TREATING OR INCORRECT ALLOYS IN THE SPRINGS. SUBMITTER RECOMMENDATIONS: SPRINGS PN 69-77855-1 SHOULD BE REPLACED WITH PN 69-77855-2 SPRINGS PER BOEING TELEX AEO-AUB-94-0195RR.