Service difficulty report · Pitot Head · Boeing 737824

Difficulty date
March 17, 2025
Submitted
March 19, 2025
Operation
Air carrier
Aircraft
N76517
Make and model
Boeing 737824
Aircraft serial
31628
Aircraft time
52,660 hours, 18,621 cycles
Part
Pitot Head
Part number
0851HT1
Part serial
436807
Condition
Faulty
Location
Zone 100
Part time
5,927 hours, 2,443 cycles
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

CAPT PITOT LIGHT LIGHT ON CAPT PITOT LIGHT ILLUMINATED AND CB POPPED. UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. UNDER TOMC GUIDANCE FLT CREW APPLIED MEL 3005A. PULLED AND COLLARED PAPT PITOT HEATER CB C523 AT THE P18-3 PANEL GRID C1. TOMC VERIFIED PER SSM 30-31-11-101.1 THAT NO THER SYSTEMS ARE DEACTIVATED AS PER GMM 05-30-05 SEC P. RESEATED CAPT HEATER CB ON THE P18-3 PANEL. BREAKER IS RELEASING WITH PROBE HEAT SWITCH IN AUTO AND ON POSITION ON THE WINDOW AND PITOT HEAT PANEL. REF FIM 30-31/802 *DM* SUGGEST REF FIM 30-31 TASK 802 " CAPT PITOT (CAPT P/S) LIGHT IS ON - FAULT ISOLATION". REMOVED AND REPLACED CAPT'S PITOT PROBE IAW AMM 34-11-01/401. UPTO OPS CHECK ACCOMPLISHED LEFT PITOT SYSTEM LEAK TEST PER MMTASK 34-11-00-790-810, TEST PASSED. CAPTS PITOT PROBE INSTALLATION C/W VERIFIED CORRECT PART AND PROPER INSTALLATION OF CAPTAIN'S PITOT PROBE. LEAK CHECK GOOD, OK TO CONTINUE C/W