SDR IPXA2025120335242

Service difficulty report · Switch · Boeing 75724APF

Difficulty date: December 2, 2025
Submitted: December 3, 2025
Operation: Air carrier
Aircraft: N462UP
Make and model: Boeing 75724APF
Aircraft serial: 28266
Aircraft time: 40,706 hours, 21,316 cycles
System (JASC): 3414 · Airspeed/Mach Indicator
Part: Switch
Part number: MS2452523
Part serial: BNXXX
Condition: Faulted
Location: Zone 200
Stage of operation: CL
How discovered: O
Nature of condition: O
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

EMERGENCY DECLARED, ATB. CLIMBING OUT OF 13000 MAX SPEED ZIPPER WAS STUCK AT 267KTS, OVERSPEED INDICATION PERFORMED AIRSPEED UNRELIABLE CHECKLIST, ALL AIRSPEEDS MATCHED, RETURNED TO ONT. T/S IAW SSM 34-12-01 AND SSM 34-12-02 FOUND SWITCH (S10471) FAULTY. R & R SWITCH IAW SWPM 20-83-00 & AMM 20-11-00.

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