Service difficulty report · Fitting · Boeing 737824

Difficulty date
December 31, 2023
Submitted
January 4, 2024
Operation
Air carrier
Aircraft
N12216
Make and model
Boeing 737824
Aircraft serial
28776
Aircraft time
78,126 hours, 28,344 cycles
Part
Fitting
Part number
1550127114
Condition
Damaged
Location
Pylon
Stage of operation
CR
How discovered
O
Nature of condition
K, O
Precautionary procedure
B

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

What was found

LOSS OF HYD A QTY IN FLT GEAR SUCCESSFULLY MANUALLY EXTENDED. TASK 29-11-00-860-805, TASK 29-09-00-860-802. CONNECTION BAD. REF IPC 29-11-51-01, AMM 29-11-11. THIS ITEM LOCKED PER TOMC. UNLOCK TO CLEAR LOSS OF QTY IN FLT DUPLICATED ON GROUND DURING ENGINE 1 DRY ADDITIONAL EMPLOYEE ASSISTED WITH T/S DISCONNECTED Q/D FITTINGS AND REMOVED 5EA CLAMPS AND PRESSURE MOTOR. NO1 EDP PRESSURE LINE (CENTER LINE)LEAKING AT UPPER QD ADD EMP:416160 HOSE FROM EDP AND PYLON FITTINGS. INSTALLED NEW HOSE AND POINT. LINE REQS CHANGE. CURRENT STATE, RESEVOIR A REATTACHED CLAMPS. PERFORMED DRY MOTOR RUN. SIGNIFICANT LEAKAGE DEPRESSURIZED AND ENTERED IN E-LOTO IAW TASK 29-11-51-000-801, AT PYLON CONNECTION STILL EXISTS. SUSPECT FITTING AT PYLON REMOVED AND REPLACED NO1 ENGINE EDP PRESSURE LINE BULKHEAD PARTS USED: 29-2900-3-0003,QTY :1 29-2913-3-0003,QTY :1 FITTING ASSEMBLY IAW CMM 72-30-01. LEAK CHECK GOOD IAW DRY MOTOR OF EDP TASK 71-00-00-700-821-F00. TOOL AND FOD CHECK GOOD, ACFT RETURMED TO NORMAL CONFIGURATION. OK FOR SERVICE ADD EMP:416160