SDR AALA202604303842

Service difficulty report · Tab · Boeing 737823

Difficulty date: April 8, 2026
Submitted: April 30, 2026
Operation: Air carrier
Aircraft: N920AN
Make and model: Boeing 737823
Aircraft serial: 29521
Aircraft time: 65,799 hours, 27,234 cycles
System (JASC): 5523 · Elevator, Tab Structure
Part: Tab
Condition: Corroded
Location: Zone 300 Elev
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: LEFT HAND HORIZONTAL STABILIZERS ELEVATOR TAB CONTROL MECHANISM LOWER SPRING ATTACH HARDWARE HAS EVIDENCE OF CORROSION. REMOVED AND REPLACED LEFT HAND HORIZONTAL STABILIZERS ELEVATOR TAB CONTROL MECHANISM LOWER SPRING ATTACH HARDWARE AND BUSHING, PER PER B737 NG AMM 27-31-34. PERFORMED SATISFACTORY ELEVATOR AND ELEVATOR TRIM CONTROL SYSTEM, PER B737 NG AMM 27-31-00-710-801.