Service difficulty report · Switchpack · Boeing 737823

Difficulty date
March 21, 2025
Submitted
April 1, 2025
Operation
Air carrier
Aircraft
N835NN
Make and model
Boeing 737823
Aircraft serial
29577
Aircraft time
44,220 hours, 18,685 cycles
Part
Switchpack
Part number
254A115015
Part serial
2508
Condition
Faulted
Location
Zone 200
Part time
3,969 hours, 1,830 cycles
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AIRCRAFT WAS NOT GROUNDED: WHEN AUTO BRAKES ARE PUT IN RTO, THE AUTO BRAKES DISARM LIGHT COMES ON. TROUBLESHOT AND FOUND S2 SWITCH ON BOTH LEFT HAND AND RIGHT HAND (SWPK)-SWITCHPACK ASSEMBLY FAULTY. REMOVED AND REPLACED LEFT HAND (AALA202503211855) AND RIGHT HAND (AALA202504018371) SWPK. PER WC 08L11276001 AND WC 08L11276002. OPERTIONAL CHECK GOOD.