Service difficulty report · Rib · Boeing 73779P

Difficulty date
June 3, 2023
Submitted
July 11, 2023
Operation
Air carrier
Aircraft
N7827A
Make and model
Boeing 73779P
Aircraft serial
28255
Aircraft time
57,742 hours, 36,958 cycles
Part
Rib
Part number
UNKNOWN
Condition
Cracked
Location
Zn 300 Stabilize
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; 17.00 INCH FROM FRONT SPAR; INBD SIDE OF RIB. CRACK LENGTH IS 0.800 INCHES. 2023-365475<[01] TOOL USED: EDDY CURRENT EQUIPMENT; P/N: NORTEC 600D; S/N: 220272712; CAL DUE DATE: 17-DEC-23;[02] REPAIRED ON EXTERNAL SKIN LOWER INSPAR AT STAB STA 184.70 TO STA. 203.10 AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11 AND SRM 51-40-05.SEE INDIVIDUAL SING OFF BELOW;[03] REPAIRED ON EXTERNAL SKIN LOWER INSPAR AT STAB STA 184.70 TO STA. 203.10 AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11 AND SRM 51-40-05.SEE INDIVIDUAL SING OFF BELOW<BR>RII

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