SDR ASAA2015022710821

Service difficulty report · Bolt · Boeing 737890

Difficulty date: February 27, 2015
Submitted: March 4, 2015
Operation: Air carrier
Aircraft: N570AS
Make and model: Boeing 737890
Aircraft serial: 35185
Aircraft time: 30,701 hours, 9,127 cycles
Engine: Cfmint CFM567B27
System (JASC): 7260 · Turbine Engine Accessory Drive
Part: Bolt
Condition: Broken
Location: Drive Pad
Stage of operation: IN
How discovered: V
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

WHILE ACCOMPLISHING T/C 78472020 DRIVE PAD BOLT AT LWR INBD AT TORQUING HEAD SNAPPED/BROKE OFF. REMNANTS OF BOLT STUCK IN DRIVE PAD. ACFT GROUNDED. R & R NR 2 ENGINE STARTER DRIVE PAD ASSY IAW ESM 72-63-00-040/430-001 AS APPLICABLE. ACCOMPLISHED ENGINE TESTS IAW MM 71-00-00-800-811-F00, TABLE 502.