Service difficulty report · Sensor · Boeing 7377BD

Difficulty date
April 14, 2023
Submitted
April 17, 2023
Operation
Air carrier
Aircraft
N7743B
Make and model
Boeing 7377BD
Aircraft serial
36718
Aircraft time
47,697 hours, 24,695 cycles
Part
Sensor
Condition
Faulty
Location
Zn 100 Fus Lower
Stage of operation
TO
How discovered
9
Nature of condition
J, O
Precautionary procedure
A

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

What was found

LEFT MAIN GEAR DISAGREE LIGHT ON BOTH ILLUMINTED RED&GREEN AND STAYED ILLUMINATED IN UP AND OFF HANDLE POSITION ;RANS QRH<[01] -FOUND FAULTS MSG IN EEC 73-31231;7331-241;73-31232 AND 73-31242; NO FAULT CODES FOUND CDS;PSEU;SMYD.<BR>-AS PER FIM73-24;TASK812 AND TECH FIEDLD ADVISED L/H DN LOCK SESORS RESISTANCE VALVE MEASUREMENT CHK; FOUND DN LOCK SENSOR(S71)RESISTANCE VALVE SLIGHT HIGHER THAN OTHER SONSORS.<BR>-REPLACED DN LOCK SENSOR(S71) PER AMM 32-61-31<BR>-L/G LEVER UP OPS CHKED ON AIR MODE WITH L/G PROXIMITY SENSOR ACT? DEACTIVATE KIT PER AMM 32-09-12;[02] FOUND FAULTS MSG IN EEC 73-31231;7331-241;73-31232 AND 73-31242; NO FAULT CODES FOUND CDS;PSEU;SMYD.<BR>-AS PER FIM73-24;TASK812 AND TECH FIEDLD ADVISED L/H DN LOCK SESORS RESISTANCE VALVE MEASUREMENT CHK; FOUND DN LOCK SENSOR(S71)RESISTANCE VALVE SLIGHT HIGHER THAN OTHER SONSORS.<BR>-REPLACED DN LOCK SENSOR(S71) PER AMM 32-61-31<BR>-L/G DOWN LOCK SENSOR OPS TEST WITH LEVER UP & ON AIR MODE WITH L/G PROXIMITY SENSOR ACT? DEACTIVATE KIT PER AMM 32-09-00; 32-09-01; NO FAULT NOTED;[03] ERROR CORRECTION

More about the Boeing 737-7BD