Service difficulty report · Channel · Boeing 737990

Difficulty date
April 18, 2016
Submitted
April 27, 2016
Operation
Air carrier
Aircraft
N309AS
Make and model
Boeing 737990
Aircraft serial
30857
Aircraft time
53,241 hours, 20,696 cycles
Part
Channel
Part number
146A750217
Condition
Corroded
Location
Bs 727b-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 COMPARTMENT, LEFT FLOOR SUPPORT ZEE CHANNEL SECTION APPROXIMATELY BS 727B+10-727D IS CORRODED. ACFT GROUNDED. REMOVED CORROSION FROM AFT PIT CARGO COMPARTMENT LT FLOOR SUPPORT 2EE CHANNEL FROM 727C+11 TO 727D ORIGINAL THICKNESS IS 0.04 TOTAL MATERIAL REMOVED ONLY 0.002 REMAINING MATERIAL 0.038 THE PANEL IS WITHIN LIMITS IAW SRM 53-00-53-1A-2. REMOVED CORROSION FROM BS 727B+10 TO 727C+10 ORIGINAL THICKNESS IS 0.040, REMOVED MATERIAL IS 0.006, REMAINING MATERIAL IS 0.034. THE AREA FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2. REMOVED DAMAGED SECTION AND FAB NEW REPAIR PARTS IAW SRM 53-00-53-2R-5. ALODINE & PRIMED IAW SRM 51-20-01. THEN INSTALLED IAW SRM 53-00-53-2R-5. LLT T8225V. ALODINED, PRIMED AND MARKED BLENDOUT AREAS BS 727C+11 TO 727D IAW SRM 51-20-01, SOPM 20-41-02 AND AMM 51-05-01.