Service difficulty report · Pcu · Boeing 737990ER

Difficulty date
January 10, 2020
Submitted
January 14, 2020
Operation
Air carrier
Aircraft
N492AS
Make and model
Boeing 737990ER
Aircraft serial
44110
Aircraft time
16,356 hours, 5,317 cycles
Part
Pcu
Part number
251A21602
Part serial
22956
Condition
Binding
Location
Elevator
Part time
16,356 hours, 5,317 cycles
Stage of operation
IN
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

REF LP 11995043, BINDING IN FLIGHT CONTROLS CONTINUE IN THE FWD AND AFT POSITION. MUCH MORE NOTICABLE WHEN RELEASED AFTER BEING PUSHED TO THE FULL FWD POSITION. DID NOT CHECK LEFT AND RIGHT MOVEMENT. GROUNDED - YES. TROUBLSHOT TO A FAULTY A SYSTEM ELEVATOR PCU. REMOVED AND REPLACED A SYSTEM ELEVATOR PCU PER AMM 27-31-14. LEAK AND OPS CHECK GOOD. ELEVATOR AND AILERON CONTROLS OPS CHECK NORMAL. NO BINDING.