Service difficulty report · Proximity Switch · Boeing 737924ER

Difficulty date
August 8, 2020
Submitted
August 9, 2020
Operation
Air carrier
Aircraft
N38443
Make and model
Boeing 737924ER
Aircraft serial
31655
Aircraft time
31,141 hours, 10,986 cycles
Part
Proximity Switch
Part number
285A16006
Condition
Faulted
Location
Mlg
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

LANDING GEAR WILL NOT RETRACT PSEU BITE SHOWS NO PRIMARY POWER TO LGTV AND MESSAGE 29-20001. RIGHT GEAR GROUND SHIFT TELEFLEX CABLE IS INTACT. REQUIRES FURTHER TS AULS, PSEU SHOWS VALID VOLTAGE FROM D11138. PER FIM PSEU REQUIRES REPLACEMENT. OF C/B''S ,CHECKED GOOD PERFORMED BITE TEST OF PSEU, NO CURRENT F T/S PER FIM TASK 29-20-00-810-807, CHECKED POWER ON LOAD SIDE REMOVED AND REPLACED PSEU REF MM 32-09-10. REQUIRES OPS CKS REF TASK 32-09-10-710-801 SWITCH, PROXIMI OFF 29-3260-9-0002 0227 ON 29-3260-9-0003 0334 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1039216 SN OFF 0227 ADD EMP:U245020 OPS CHECK SATISFACTORY, NO FAULTS NOTED. ACCOMPLISHED OPERATIONAL CHECK OF PSEU, REF AMM32-09-10-710-810. PERFORMED EXTENSION RETRACTION TEST PER AMM 32-32-00-710, CYCLED GEAR SEVERAL TIMES. NO FAULTS OBSERVED AT THIS TIME. COMPLIED WITH RII REQUIREMENTS PER GMM 09-25-05. REF: AMM 32-32-00-710.