Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 20, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N207WN
Make and model
Boeing 7377H4
Aircraft serial
34012
Aircraft time
52,378 hours, 31,227 cycles
Part
Support
Condition
Corroded
Location
Bs 400
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 FCB FLOOR TO SIDEWALL SUPPORT RBL24.75; BS400+18.5'; WL157 ; / [01] VERIFIED APPLICABILITY ON SRM 53-30-53-OI-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE; [02] REMOVED CORROSION FROM FLOOR TO SIDEWALL SUPPORT BS400+18.5'' RBL24.75; WL175 IAW SRM 51-10-02-OG-0; MAXIMUM BLENDED AREA 1''X.5''0.020''DEEP; FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2; PAR. 4.A.(2) FIG. 103 DETAIL A.<BR>TOOL USED: CALIPER; P/N:505-675(ISOOO887) S/N:05946723; [03] REMOVED FLOOR TO SIDEWALL SUPPORT BS400 TO BS420 RBL24.75; WL157; IAW SRM 51-40-02-OG-0; [04] FCB FLOOR TO SIDEWALL SUPPORT BS400 TO BS420 RBL24.75; WL 157; REPLACEMENT TO BE ACCOMPLISH ON TASK CARD #TTG8Q0054E24; [05] CORRECTION: REMOVED CORROSION FROM FLOOR TO SIDEWALL SUPPORT BS400+18.5'' RBL24.75; WL157 IAW SRM 51-10-02-OG-0; MAXIMUM BLENDED AREA 1''X.5''0.020''DEEP; FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2; PAR. 4.A.(2) FIG. 103 DETAIL A. <BR>TOOL USED: CALIPER; P/N:505-675(ISOOO887) S/N:05946723; [06] VERIFIED APPLICABILITY ON SRM 53-30-53-OI-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE.<BR>VERIFIED REMOVED CORROSION FROM FLOOR TO SIDEWALL SUPPORT BS400+18.5'' RBL24.75; WL157 IAW SRM 51-10-02-OG-0; MAXIMUM BLENDED AREA 1''X.5''0.020''DEEP; FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2; PAR. 4.A.(2) FIG. 103 DETAIL A.<BR>VERIFIED FCB FLOOR TO SIDEWALL SUPPORT BS400 TO BS420 RBL24.75; WL 157; REPLACEMENT TO BE ACCOMPLISH ON TASK CARD #TTG8Q0054E24.

More about the Boeing 737-7H4