# SDR CALA2026051516295

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2026
- Submitted: May 18, 2026
- Operation: Air carrier
- Aircraft: [N15710](https://openairdocs.org/aircraft/N15710), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28780
- Aircraft time: 83,475 hours, 31,262 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Transmitter
- Part number: 18173812
- Part serial: 1999
- Condition: Faulted
- Location: Flap Sys
- Part time: 74,566 hours, 27,426 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026051516295

## Discrepancy

NOTICED AT CRUISE THAT R FLAP TE IND HALF WAY BETWEEN 0 AND 1.NO LE OR TE FLAP LIGHTS ON DEBRIEF INBOUND FLT CREW, STATED FLAP HANDLE UP, AT CRUIZE THE TRAILING EDGE FLAP INDICATOR SHOW A SPLIT SEE PHOTOS. AT GATE CYCLE FLAPS WITH HYDRAULICS NEEDLES WERE MARRY. SEE FIM TASK 27-51 TASK 826.PERFORMED FSEU BITE 27-51-TASK 801 NO FAULTS. ADD EMP:U233484,U190000 SUSPECT INDICATOR PN 2061-15-1 AT FAULT. LOCK FOR POSITIVE FIX. CALL TOMC BEFORE SIGNING OFF. REF FIM 27-59 TASK 807, NO EXISTING FAULTS ON FSEU BITE, FAULT HISTORY SHOWED ON LAST LEG 27-53256 FLAP 7 SKEW FAULT INTERMITTENT. PERFORMED TE FLAP INDICATION DYNAMIC HEALTH CHECK REF AMM 20-10-76-700-808. HEALTH CHECK PASSED FOR ALL SENSORS. OPS TEST FLAP SYSTEM MULTIPLE TIMES IN REF WITH AMM 27-51-00. NO FAULTS DETECTED ON FLAP INDICATION. OK TO CLEAR SEE LOG PAGE 8882816 FOR CORRECTIVE ACTION (TRANSMITTER R&R). R&R RIGHT FLAP POSITION TRANSMITTER IN REF WITH AMM 27-58-01-400-801 UP TO AND NOT INCLUDING STEP 3.H.(3). COULD NOT MOVE FLAPS TO UP POSITION DUE TO RIGHT FLAP INDICATOR NEEDLE OUT OF SYNC WITH LEFT, HAD TO USE ALTERNATE FLAP SWITCH. NEW RIGHT TRANSMITTER, FL OFF 29-2759-9-0004 1999 ON 29-2759-9-0004 8301 TRANSMITTER, FL OFF 29-2759-9-0004 1999 ON 0000 M&E PN ON - 29-2759-9-0004 MFG SN OFF - 1999AMOD MFG PN OFF - 18-1738-12 ROTABLE PARTS CHG:TT # 1183106 SN OFF 1999 PN OFF 29-2759-9-0004

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