SDR CALA2019070801169

Service difficulty report · Air Data Module · Boeing 737824

Difficulty date: July 8, 2019
Submitted: July 8, 2019
Operation: Air carrier
Aircraft: N73278
Make and model: Boeing 737824
Aircraft serial: 31596
Aircraft time: 52,403 hours, 18,382 cycles
System (JASC): 3411 · Pitot/Static System
Part: Air Data Module
Part number: C17001BA01
Condition: Faulty
Location: Pitot/Static Sys
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

IAS DISAGREE MESSAGE SHOWS ON AIRPSEED DISPLAY CAPTAIN'S TEST FOUND CAPT''S AIRSPEED FLUCTUATING 10-13 KNTS. REMOVED AND R EPLACED LH PITOT ADM PER AMM 34-21-04. PERFORMED INSTALLATION TE ST. ALL TEST PASSED NO FAULTS NOTED. OKAY FOR SERVICE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1294390 SN OFF 4106 IPC REFERENCE # 34-21-04-02 IDT INSP C/W PER GMM, NO FAULT NOTED. INFO UPDATE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1294390 SN OFF 4106 MODULE, AIR DAT OFF 29-3413-9-0001 4106 ON 42-3413-9-0001 9463