Service difficulty report · Transmitter · Boeing 737924ER

Difficulty date
November 29, 2025
Submitted
December 2, 2025
Operation
Air carrier
Aircraft
N66837
Make and model
Boeing 737924ER
Aircraft serial
60122
Aircraft time
35,626 hours, 13,063 cycles
Part
Transmitter
Part number
202190101
Part serial
5546
Condition
Faulted
Location
Zone 100
Part time
35,610 hours, 13,057 cycles
Stage of operation
CL
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

HYD NR 1 LOW PRESSURE ILLUMINATED ON DEPARTURE PERFORMED INITIAL EVALUATION IAW FIM 29-30 TASK 812. COULD NOT FIND ANY EXTERNAL HYD LEAKS, SYS RESERVOIR INDICATION WAS LOW & HAS FLUID WITHIN THE TRANSMITTER. SERVICED A SYS WITH 1 GALLON OF HYD WITH NO MOVENT OF TRANSMITTER MOVEMENT. ACCOMPLISHED FIM 29-30, TASK 812, STEP F 1-5, NO DEFECTS NOTED ON EDP CASE DRAIN FILTER MODULE. PULLED CB D5 AT P18-2 & CB D11 AT P6-1 TAGGED AND COLLARED PER SUBTASK 29-33-12-860-005. FOUND HYD SYS A INDICATION GAUGE & TRANSMITTER FAULTY LEAKED FUILD INSIDE GAUGE. R & R SYS A HYD INDICATOR & TRANSMITTER IAW HYD FLUID QTY TRANSMITTER-INDICATOR. REMOVAL/INSTALLATION REFERENCE 29-33-12/401. TEST PASSED. OPS CHECKED GOOD. PERFORMED ENGINE RUN.