Service difficulty report · Tee Fitting · Boeing 7377H4

Difficulty date
July 28, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Tee Fitting
Condition
Corroded
Location
Bs 930
Stage of operation
IN
How discovered
9
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

CORROSION ON WATER LINE T-FITTING AT AFT WET AREA BS930 RBL43 WL204. ; / [01] EVALUATED CORROSION AT T-FITTING AREA L=0.400' W=0.400' AT WET AREA BS930 RBL43 WL204 NO ALLOWABLE DAMAGE AT SRM . PART TO BE REPAIR BY REPLACEMENT PER SRM 51-10 02.; [02] VERIFIED; NO DAMAGE LIMITS; REQUIRES REPLACEMENT.; [03] REMOVED AND REPLACED T-FITTING (PN: FT1206) AT AFT WET AREA BS 930 RBL 43 WL 204 IAW BOEING DWG 417A2410 SH 19; ZONE C7; FN 1;7 AND 8; BAC5506 STEP 8.2.2; 8.1.1.2 AND 8.3.1 AND BAC5001-9 STEP 8.5.1 C. REQUIRES LEAK CHECK.; [04] VERIFIED REMOVED AND REPLACED T-FITTING (PN: FT1206) AT AFT WET AREA BS 930 RBL 43 WL 204 IAW BOEING DWG 417A2410 SH 19; ZONE C7; FN 1;7 AND 8; BAC5506 STEP 8.2.2; 8.1.1.2 AND 8.3.1 AND BAC5001-9 STEP 8.5.1 C. REQUIRES LEAK CHECK.; [05] PERFORMED LEAK CHECK ON T-FITTING (PN: FT1206) AT AFT WET AREA BS 930 RBL 43 WL 204 IAW AMM 38-10-00-790-801 STEP 3.F. TEST WAS GOOD; NO LEAKS NOTED. <BR><BR>TOOLING USED: ID: ATS1488 SN:UNKNOWN; [06] VERIFED FITTING IS LEAK FREE PER AMM 38-10-00-790-801 STEP 3.F

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