Service difficulty report · Skin · Boeing 737*

Difficulty date
February 22, 2022
Submitted
March 22, 2022
Operation
Air carrier
Aircraft
N7727A
Make and model
Boeing 737*
Aircraft serial
32673
Aircraft time
50,839 hours, 25,623 cycles
Part
Skin
Condition
Cracked
Location
R/H Horiz. Stab.
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

CRACK INDICATION FOUND ON RH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 16 INCH FROM FRONT SPAR; INBD SIDE OF RIB. CRACK LENGTH IS 1.500 INCH 2022-85499 / [01] EDDY CURRENT EQUIPMENT P/N: NORTEC500D; S/N: N500X12101V022236; DUE DATE: 02-JUN-22.;[02] TOOL USED ULTRASONIC EQUIPMENT P/N: 45MG; S/N : 130064101; DUE DATE: 11/MAY/22;[03] REJECT - STEP 14 REPAIR EXTERNAL SKIN AT STA 193.90 DOES NOT MEET THE MINIMUM FASTENER ROW BEYOND THE CUT AT DRAIN HOLE AREA AT RT HORIZONTAL STABILIZER IAW 55-10-01-2R-11 REPAIR 11 <BR>RAISED NEW FAULT TTG8Q00B4NEV;[04] REPAIRED LOWER IN-SPAR SKIN LOC BTW STAB. STA. 184 TO STAB. STA. 203.10 AT RH HORIZONTAL STABILIZER I.A.W B737-700 SRM 55-10-01-2R-11 REPAIR 11; MEASURE OF CRACK IS L= 1.500 INCHES TOOL USED: CALIPER P/N 500-197-30; S/N A210443164 DUE DATE 01-SEP-22. THIS REPAIR IS CATEGORY B WITH AN INSPECTION THRESHOLD 56;000 TOTAL FLIGHT CYCLES.<BR>SEE INDIVIDUAL SIGNSOFFS BELOW.;[05] REPAIRED LOWER IN-SPAR SKIN LOC BTW STAB. STA. 184 TO STAB. STA. 203.10 AT RH HORIZONTAL STABILIZER I.A.W B737-700 SRM 55-10-01-2R-11 REPAIR 11; MEASURE OF CRACK IS L= 1.500 INCHES TOOL USED: CALIPER P/N 500-197-30; S/N A210443164 DUE DATE 01-SEP-22. THIS REPAIR IS CATEGORY B WITH AN INSPECTION THRESHOLD 56;000 TOTAL FLIGHT CYCLES. <BR>SEE INDIVIDUAL SIGNSOFFS BELOW. AS RII