SDR AALA202003019015

Service difficulty report · Limiter · Boeing 737823

Difficulty date: February 29, 2020
Submitted: March 1, 2020
Operation: Air carrier
Aircraft: N921AN
Make and model: Boeing 737823
Aircraft serial: 29522
Aircraft time: 60,741 hours, 24,713 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Limiter
Condition: Leaking
Location: Hydraulic Sys
Stage of operation: DE
How discovered: O
Nature of condition: K, J
Precautionary procedure: O

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

What was found

AIRCRAFT WAS GROUNDED: ON DESCENT, CREW CONTACTED DISPATCH AND ADVISED A LOSS OF HYDRAULIC ON SYSTEM A. MAINTENANCE PATCHED AND ALL AGREED TO CONTINUE TO DESTINATION. LANDING GEAR DROPPED MANUALLY. FLIGHT DECLARED EMERGENCY. FLIGHT LANDED WITHOUT INCIDENT. FOUND PTU FLOW LIMITER VALVE ASSY LEAKING HEAVY AMOUNTS OF HYD FLUID. REMOVED AND REPLACED LIMITER AND SERVICED HYDS. IAW AMM 29-22-51-400-801.