# Service difficulty reports: N851SY A list on [N851SY](https://openairdocs.org/aircraft/N851SY.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR SCNA20260928412](https://openairdocs.org/sdr/SCNA20260928412.md): Brake · no discrepancy · Sep 27, 2026 · N851SY · Boeing 7378K5 · Landing Gear Brake System > AIRCRAFT PULLS HARD LEFT WHEN BRAKING. PERFORMED TROUBLESHOOTING IAW FIM 32-42 TASK 816. NO DEFECTS OBSERVED. DETERMINED TO BE INTERMITTENT FAULT PER FIM. - [SDR SCNA20260806340](https://openairdocs.org/sdr/SCNA20260806340.md): Slide · dislodged · Aug 5, 2026 · N851SY · Boeing 7378K5 · Escape Slide > 1L YELLOW PART OF THE SLIDE IS COMING OUT OF ITS HOUSING. OPEN - [SDR SCNA20260717310](https://openairdocs.org/sdr/SCNA20260717310.md): Bracket · out of adjust · Jul 17, 2026 · N851SY · Boeing 7378K5 · Emergency Equipment > 1L DOOR GIRT BAR STICKS IN BRACKETS, HARD TO REMOVE. ADJUSTED GIRT BAR BRACKET. EASILY REMOVEABLE. OK FOR SERVICE. REF MM 25-66-01 - [SDR SCNA20260713290S](https://openairdocs.org/sdr/SCNA20260713290S.md): Fastener · damaged · Jul 11, 2026 · N851SY · Boeing 7378K5 · Emergency Equipment > REMOVED TEMP FASTNER AND REPLACED WITH RIVET REF SRM 51-40-02. OK FOR SERVICE. THIS CLEARS GMM/MTI - [SDR SCNA20260706282](https://openairdocs.org/sdr/SCNA20260706282.md): Cradle · out of adjust · Jul 5, 2026 · N851SY · Boeing 7378K5 · Emergency Equipment > L1 GIRT BAR CRADLE LOOSE. ADJUSTED L1 GIRT BAR CRADLE IAW AMM 25-66-01. NO DEFECT NOTED AT THIS TIME. - [SDR SCNA20260706281](https://openairdocs.org/sdr/SCNA20260706281.md): Hook · loose · Jul 2, 2026 · N851SY · Boeing 7378K5 · Emergency Equipment > L1 GIRT BAR J-HOOK IS LOOSE. ADJUSTED L1 DOOR J-HOOK REF AMM 25-66-01. OPS CHECK GOOD ACFT OK FOR SERVICE. - [SDR SCNA20260702280](https://openairdocs.org/sdr/SCNA20260702280.md): Hook · loose · Jul 2, 2026 · N851SY · Boeing 7378K5 · Emergency Equipment > L1 GIRT BAR J-HOOK IS LOOSE. ADJUSTED L1 DOOR J-HOOK REF AMM 25-66-01. OPS CHECK GOOD. ACFT OK FOR SERVICE. - [SDR SCNA20260504184](https://openairdocs.org/sdr/SCNA20260504184.md): Battery Pack · inoperative · May 3, 2026 · N851SY · Boeing 7378K5 · Emergency Lighting > FWD CABIN LT SIDE EMERGENCY LIGHTS INOP. R & R LT FWD CABIN EMERGENCY LIGHT CHARGER ASSY IAW AMM 33-51-06-960-806 AND REPLACED BATTERY PACK IAW AMM 33-51-06-960-805. OPS CHECK GOOD AT THIS TIME. - [SDR SCNA20260504183](https://openairdocs.org/sdr/SCNA20260504183.md): Battery Pack · inoperative · May 3, 2026 · N851SY · Boeing 7378K5 · Emergency Lighting > FWD R/H SECTION OF EMERGENCY LIGHTS WILL NOT STAY ILLUMINATED LONGER THAN 30 SECONDS. R & R BATTERY PACK IAW AMM 33-51-06-960-805, OPS CHECK GOOD AT THIS TIME. - [SDR SCN2026F00000](https://openairdocs.org/sdr/SCN2026F00000.md): Unknown · odor · Feb 11, 2026 · N851SY · Boeing 7378K5 · Air Distribution System > AFT FA'S REPORTED FAINT ODOR AKIN TO ELECTRICAL BURNING DURING DESCENT AND APPROACH IN THE VICINITY OF THE AFT LAVATORY. - [SDR SCNA20260213078](https://openairdocs.org/sdr/SCNA20260213078.md): Sign · detached · Feb 11, 2026 · N851SY · Boeing 7378K5 · Emergency Lighting > SIGN OUTSIDE AFT LEFT LAV LOOSE WITH ELECTRICAL WIRING SHOWING. WORK ACCOMPLISHED: R & R LIGHT REF AMM 33-51-14 OPS TEST GOOD OK FOR SERIVCE - [SDR SCNA20251230511S](https://openairdocs.org/sdr/SCNA20251230511S.md): Skid · none · Dec 29, 2025 · N851SY · Boeing 7378K5 · Standard Practices/Structures > POSSIBLE TAIL STRIKE. PERFORMED TAIL STRIKE INSPECTION PER AMM 05-51-32 FOUND TAIL SKID AND SHOW TO STILL IN SERVICEABLE CONDITION - [SDR SCNA20251230511](https://openairdocs.org/sdr/SCNA20251230511.md): Skid · no discrepancy · Dec 29, 2025 · N851SY · Boeing 7378K5 · Fuselage Main, Structure > POSSIBLE TAIL STRIKE. PERFORMED TAIL STRIKE INSPECTION PER AMM 05-51-32 FOUND TAIL SKID AND SHOW TO STILL IN SERVICEABLE CONDITION - [SDR SCNA20250623224](https://openairdocs.org/sdr/SCNA20250623224.md): Flap System · faulted · Jun 21, 2025 · N851SY · Boeing 7378K5 · Trailing Edge Flap Control System > FLAPS DID NOT DEPLOY POST 10. RAN QRH 9.34 USED ALTERATE FLAP SWITCH TO LAND WITH FLAPS 15 (DECLARED EMERGECNY) ACCOMPLISHED FSEU BITE IAW FIM 27-51 TASK 801 WITH NO FAULTS FOUND. CARRIED OUT FLAP OPS TEST IAW AMM 27-51-00-710-801 WITH NO DEFECTS FOUND. - [SDR SCNA20250425125](https://openairdocs.org/sdr/SCNA20250425125.md): Power Supply · inoperative · Apr 23, 2025 · N851SY · Boeing 7378K5 · Emergency Lighting > LEFT OVER WING EMERGENCY EXIT LIGHT INOP. REF TO TECHOPS MX N/R 00175 - RESOLUTION: REPLACED L/H EMERGENCY EXIT LIGHT POWER SUPPLY IAW B737-800 AMM 35-51-06 OPS CHECK GOPOD - [SDR SCNA20250425128](https://openairdocs.org/sdr/SCNA20250425128.md): Light · no test · Apr 22, 2025 · N851SY · Boeing 7378K5 · Emergency Lighting > AWR CUSTOMER REQUEST: EMERGENCY LIGHT AT LEFT OVER WING DON'T TURN ON DURING TEST - RESOLUTION - (IN PROGRESS) - [SDR SCNA20250425126](https://openairdocs.org/sdr/SCNA20250425126.md): Power Supply · inoperative · Apr 22, 2025 · N851SY · Boeing 7378 · Emergency Lighting > EMP 10001944 AWR CUSTOMER REQUEST: EMERGENCY LIGHT AT LEFT OVER WING DON'T TURN ON DURING TEST - RESOLUTION: - EMERGENCY POWER SUPPLY OF EMERGENCY LIGHT AT LEFT OVER WING PN D717-02-001 WAS REPLACED PER B737-800 AMM 33-51-06 AND OPERATIONAL TEST OK - [SDR SCNA20250402090](https://openairdocs.org/sdr/SCNA20250402090.md): Bracket · damaged · Apr 2, 2025 · N851SY · Boeing 7378K5 · Escape Slide > WORK ORDER 80736, NR00087: INITIAL INSPECTION: ELONGATED HOLES ON BRACKETS (2EAS) AT FWD LH ESCAPE SLIDE COVER. BRACKETS REPLACED PER B737-800 SRM 51-40-02-0G-0 AND B737-800 AIPC 25-66-00-13. - [SDR SCNA20241028345](https://openairdocs.org/sdr/SCNA20241028345.md): Bottle · low pressure · Oct 27, 2024 · N851SY · Boeing 7378K5 · Emergency Equipment > DEFECT 757451: L1 DOOR SLIDE GAUGE IN THE RED. RESOLUTION: R&R L1 DOOR SLIDE REF AMM 25-66-01. - [SDR SCNA20241008327](https://openairdocs.org/sdr/SCNA20241008327.md): Actuator · faulted · Oct 7, 2024 · N851SY · Boeing 7378K5 · Fuel Transfer Valve > LANDED WITH FUEL IMBALANCE OF 2000 LBS NO EXCESSIVE IMPUTS DURING LANDING. NO CROSSWIND, SMOOTH LANDING COMPLETED. MC NOTIFED - RESOLUTION: BALANCED WING FUEL TANKS REF AMM 28-26-00. PERFORMED FUEL IMBALANCE EXCEEDANCE INSP. REF AMM 05-51-48. NO DEFECTS FOUND. - [SDR SCNA20240912314](https://openairdocs.org/sdr/SCNA20240912314.md): Power Supply · inoperative · Sep 11, 2024 · N851SY · Boeing 7378K5 · Emergency Lighting > TWO EXTERIOR EMERGENCY LIGHTS ON LEFT EXTERIOR ARE INOPERATIVE. ONE IN THE VICINITY OF THE OVERWING EXITS, THE OTHER AT THE TRAILING EDGE WING ROOT. TWO INTERIOR EMERGENCY LIGHTS ARE INOPERATIVE AMIDSHIP ON LEFT AISLE HEAD LINER. REMOVED AND REPLACED POWER S - [SDR SCNA2024081301](https://openairdocs.org/sdr/SCNA2024081301.md): Flap System · faulted · Aug 12, 2024 · N851SY · Boeing 7378K5 · Trailing Edge Flap Control System > ON APPROACH FLAPS STAYED AT 1ODEGREES WHEN GREATER FLAP DEGREES WERE SELECTED (EMERGENCY DECLARED). PERFORMED FIM 27-51 TASK 899, TASK 801, AND TASK 836, FOUND ONLY 27-51402 ALTN FLAP. DISENGAGED ALTN FLAP. FOUND NO FAULTS. AC OK TO CONTINUE. - [SDR SCNA20240122017](https://openairdocs.org/sdr/SCNA20240122017.md): Unknown · odor · Jan 22, 2024 · N851SY · Boeing 7378K5 · Air Distribution System > DEFECT 731833 ITEM 1,- - HEAVY SMOKE SMELL IN COCKPIT AND CABIN PULLING INTO GATE. - - RESOLUTION: C/W FIM TASK 21-00-806 PARAGRAPH C. NO FUMES NOTED. UNABLE TO DUPLICATE. ADDITIONALLY, LOG 731833 ITEM 2, INSPECT E&E BAY,C/B + INSTRUMENT AREA RAN BOTH ENGIN - [SDR SCNA20240118016](https://openairdocs.org/sdr/SCNA20240118016.md): Unknown · odor · Jan 16, 2024 · N851SY · Boeing 7378K5 · Air Distribution System > DEFECT 731833: - - HEAVY SMOKE SMELL IN COCKPIT AND CABIN PULLING INTO GATE - - RESOLUTION: C/W FIM TASK 21-00-806 PARAGRAPH C. NO FUMES NOTED. UNABLE TO DUPLICATE. ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE n_number = 'N851SY' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N851SY/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.