SDR AALA202604089373

Service difficulty report · Skin · Boeing 737823

Difficulty date: April 1, 2026
Submitted: April 8, 2026
Operation: Air carrier
Aircraft: N991AN
Make and model: Boeing 737823
Aircraft serial: 30920
Aircraft time: 49,793 hours, 21,240 cycles
System (JASC): 5512 · Horizontal Stabilizer, Plate/Skin
Part: Skin
Condition: Cracked
Location: Zone 300
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

AIRCRAFT IN BASE MAINTENANCE: 3 CRACKS IN RIGHT HAND HORIZONTAL STABILIZER LOWER SKIN. CRACKS LOCATED AT STABILIZER STATION 138.70, 16 INCHES FORWARD OF AFT SPAR, AT STABILIZER STATION 147.90, 8 INCHES AFT OF FORWARD SPAR, AND AT STABILIZER STATION 147.90, 16 INCHES AFT OF FORWARD SPAR. ACCOMPLISHED DOUBLER REPAIR PER SRM 55-10-01-2R-11.