Service difficulty report · Transition Panel · Boeing 737890

Difficulty date
April 12, 2016
Submitted
April 18, 2016
Operation
Air carrier
Aircraft
N528AS
Make and model
Boeing 737890
Aircraft serial
35695
Aircraft time
25,528 hours, 8,385 cycles
Part
Transition Panel
Part number
146A750231
Condition
Corroded
Location
Bs 727i-727c
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

AFT CARGO BAY LT BS 727I-727C TRANSITION PANEL CORRODED. ACFT GROUNDED. REMOVED CORROSION FROM AFT PIT LT BS 727C TO 727D, THE ORIGINAL THICKNESS IS 0.040 IAW DWG NR BAC 1496-377, REMAINING MATERIAL IS 0.030, LOST MATERIAL 0.010, THE PANEL WAS OUT OF LIMITS FROM 727C TO 727D IAW SRM 51-00-53. REMOVED DAMAGE, ST 727C TO 727D AND FABRICATED NEW REPAIR PARTS IAW SRM 53-00-53. ALODINED AND PRIMED REPAIR PARTS IAW SRM 51-20-01. THEN INSTALLED THE NEW REPAIR PARTS IAW SRM 53-00-53. REMOVED CORROSION FROM 727I, ORIGINAL THICKNESS IS 0.040 DWG NR BAC 1496-377, REMAINING MATERIAL 0.038, LOST MATERIAL 0.002, THE PANEL WAS IN LIMITS IAW SRM 53-00-53. APPLIED ALODINE AND PRIMED IAW SRM 51-20-01 PART MARK IAW AMM 51-05-01. UT T8225S. REMOVED CORROSION FROM AFT PIT LT BS 727C TO 727D, THE ORIGINAL THICKNESS IS 0.040 IAW DWG NR BAC 1496-377, REMAINING MATERIAL IS 0.030, LOST MATERIAL 0.010, THE PANEL WAS OUT OF LIMITS FROM 727C TO 727D IAW SRM 51-00-53. REMOVED DAMAGE, ST 727C TO 727D AND FABRICATED NEW REPAIR PARTS IAW SRM 53-00-53. ALODINED AND PRIMED REPAIR PARTS IAW SRM 51-20-01. THEN INSTALLED THE NEW REPAIR PARTS IAW SRM 53-00-53. REMOVED CORROSION FROM 727I, ORIGINAL THICKNESS IS 0.040 DWG BAC 1496-377, REMAINING MATERIAL 0.038, LOST MATERIAL 0.002, THE PANEL WAS IN LIMITS IAW SRM 53-00-53. APPLIED ALODINE AND PRIMED IAW SRM 5.