SDR AALA201907199009

Service difficulty report · Module · Boeing 737823

Difficulty date: July 18, 2019
Submitted: July 19, 2019
Operation: Air carrier
Aircraft: N926AN
Make and model: Boeing 737823
Aircraft serial: 29527
Aircraft time: 58,288 hours, 23,694 cycles
System (JASC): 3411 · Pitot/Static System
Part: Module
Part serial: 2475
Condition: Unreliable
Location: Pitot/Static Sys
Stage of operation: TO
How discovered: O
Nature of condition: J
Precautionary procedure: C

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 AT 78 KNTS F/O AIRSPEED. CAPT. WAS AT 95 KTS. IAS DISAGREE ALSO ILLUMINATED. ABORTED AT 78 KTS. MAINTENANCE ACCOMPLISHED TSM FOR FAULT MAINT MSG 31-65060 AIRSPEED DISAGREE IAW FIM TASK 31-62-00-810-876. PERFORMED FLUSH OF CAPT AND F/O PITOT SYSTEM IAW AMM 34-11-00-170-801. REMOVED AND REPLACED F/O PITOT DATA MODULE IAW AMM 34-21-04. OPS CHECK OK. PERFORMED LEAK TEST OF CAPT AND F/O PITOT SYSTEM IAW AMM 34-11-00. NO LEAKS AND AIRSPEED INDICATION CHECKED OK.