Service difficulty report · Sensing Element · Boeing 737823

Difficulty date
December 23, 2025
Submitted
December 26, 2025
Operation
Air carrier
Aircraft
N939NN
Make and model
Boeing 737823
Aircraft serial
33491
Aircraft time
35,657 hours, 14,710 cycles
Part
Sensing Element
Part number
3571279
Condition
Faulted
Location
Zone 400
Stage of operation
NR
How discovered
O
Nature of condition
M, J
Precautionary procedure
A

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

What was found

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO MIA DUE TO THE FLIGHT CREW REPORTING A RIGHT WING TO BODY OVERHEAT LIGHT ILLUMINATED. THE FLIGHT CREW FOLLOWED THE QRH PROCEDURES AND THE LIGHT STAYED ON. THE AIRCRAFT LANDED SAFELY AT MIA WITHOUT FURTHER INCIDENT. MAINTENANCE ACCOMPLISHED TROUBLESHOOTING PER FIM 26-18-00 AND FOUND FAULT CODE "64". MAINTENANCE REPLACED ELEMENTS M1763 (AALA202512261255) AND M1764 (AALA202512269331) FOR THE #2 ENGINE AND ELEMENT M1761 (AALA202512264340) FOR THE #1 ENGINE AMM 26-18-02. A SATISFACTORY OPERATIONAL / LEAK CHECK WAS ACCOMPLISHED WHICH CLEARED THE FAULT LIGHT.