# SDR ASAA2023090744973

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2023
- Submitted: September 8, 2023
- Operation: Air carrier
- Aircraft: [N523AS](https://openairdocs.org/aircraft/N523AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35194
- Aircraft time: 46,567 hours, 16,590 cycles
- System (JASC): [5540 · Rudder Structure](https://openairdocs.org/jasc/5540)
- Part: Frame
- Part number: 173A010310
- Part serial: CASA0839
- Condition: Corroded
- Location: Unknown
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023090744973

## Discrepancy

RUDDER LH SIDE SURFACE HAS SIGNS OF CORROSION NEAR FWD SIDE OF STATIC WICK BASE 3RD FROM THE TOP. GROUNDED - YES. REPAIRED DAMAGE SKIN ON L/H SIDE OF RUDDER BENEATH CONDUCTIVE FRAME & REPLACED DAMAGED CONDUCTIVE FRAME IAW ASA EA# CMPT-55EA-26012. PERORMED CALCULATED BALANCE PROCEDURE, NEW CBM IS +521.088, WITHIN ALLOWABLE LIMITS. THIS REPAIR IS A CAT "A" REPAIR.

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