Service difficulty report · Adiru · Boeing 737824

Difficulty date
February 24, 2026
Submitted
February 26, 2026
Operation
Air carrier
Aircraft
N37253
Make and model
Boeing 737824
Aircraft serial
30584
Aircraft time
76,973 hours, 28,716 cycles
Part
Adiru
Part number
HG2050BC04
Part serial
56225051
Condition
Faulted
Location
Zone 100
Stage of operation
CL
How discovered
O
Nature of condition
S
Precautionary procedure
B, A

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

What was found

ON CLIMBOUT CAPTS PFD LOST AIRSPEED.ALTITUDE. AND HDG. STAYED GONE FOR 10-15 MINS THEN RETURNED. AFTER LRU HISTORY REVIEW, LT AOA SENSOR HAS NUMEROUS REMOVALS FOR THE SAME ISSUES, ACCOMPLISHED WIRE CHECKS IN FUP 8025635, REF SSM 34-21-13-102.1, 34-21-14-101. WDM 34-21-13-2.1, 34-21-14-1. WIRING CHECKS GOOD. NO DEFECTS NOTED. R & R LT ADIRU AS A PRECAUTION IAW AMM 34-21-01/401. OPS CHECK GOOD. R & R LT AOA SENSOR DUE TO BAD PART HISTORY & AS A PRECAUTION REF AMM 34-21-05/401. OPS CHKED GOOD. R & R DEU 1 AS A PRECAUTION IAW AMM 31-62-21/401. OPS CHKD GOOD. DEU SOFTWARE LOADED IAW LOG 8029823, OPS CHKD GOOD. PERFORMED LAND VERIFY TEST IAW AMM 22-11-00-700-801. NO FAULTS FOUND.