SDR AALA201908099017

Service difficulty report · Module · Boeing 737823

Difficulty date: August 8, 2019
Submitted: August 9, 2019
Operation: Air carrier
Aircraft: N921AN
Make and model: Boeing 737823
Aircraft serial: 29522
Aircraft time: 59,123 hours, 23,980 cycles
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Module
Part number: 6937317300
Part serial: D03202
Condition: Burned Out
Location: Hyd Pump
Stage of operation: CL
How discovered: O
Nature of condition: M, B, J
Precautionary procedure: A

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

What was found

AIRCRAFT WAS GROUNDED: PILOT REPORTS CLIMBING THROUGH 15000 FEET, ELEC 1 HYD PUMP OVERHEAT LIGHT ILLUMINATED WITH STRONG ELECTRICAL SMELL IN COCKPIT. HYD PRESSURE WAS 3080PSI, ON RIGHT, 3100 ON LEFT. MIANTENANCE ACCOMPLISHED SMOKE, ODOR, FUMES INITIAL TROUBLESHOOTING CARD 05-96-70. FOUND HYD. PUMP MODULE P5-8 WITH STRONG ACRID SMELL. REPLACED HYD. PUMP MODULE P5-8 IAW AMM 29-11-91. NO FURTHER ODORS NOTED.