SDR ASAA2023032042686

Service difficulty report · Skin · Boeing 737890

Difficulty date: March 20, 2023
Submitted: April 4, 2023
Operation: Air carrier
Aircraft: N530AS
Make and model: Boeing 737890
Aircraft serial: 36578
Aircraft time: 46,006 hours, 13,421 cycles
System (JASC): 5512 · Horizontal Stabilizer, Plate/Skin
Part: Skin
Part number: 182A400112
Condition: Cracked
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

CRACKED INDICATION MARKED AT .600"L, R/H HORIZONTAL LOWER SKIN, 9" FWD OF AFT SPAR, I/B OF STA. 111.10. GROUNDED - YES. REPAIRED R/H HORIZONTAL LOWER SKIN @ STA 111.10 IAW B787-NG SRM 55-10-01-2R-11. THIS IS A CLASS "B" REPAIR WITH AN INSPECTION THRESHOLD OF 56,000 TOTAL FLIGHT CYCLES.