# N831SY: 2002 Boeing 737-83N

- Status: Valid registration
- Airframe: [Boeing 737-83N](https://openairdocs.org/model/boeing-737-83n) (registry code 13844HI, 149 seats)
- Engine: [CFM International CFM56-7B27/B1 series](https://openairdocs.org/engine/cfm-international-cfm56-7b27-b1-series) (registry code 13053)
- Serial number: 28249
- Year built: 2002
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: June 28, 2011
- Certificate issued: January 7, 2020
- Expires: January 31, 2030
- Mode S code: AB5DB8
- Registered owner: [Sun Country Inc](https://openairdocs.org/faa-owner/SUN%20COUNTRY%20INC)
- Location: [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis)
- Owner type: Corporation
- Owner's area on the map: 44.8723° N, 93.2328° W: Placed by OpenAirDocs at the center of ZIP code 55450, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=831SY
- Page: https://openairdocs.org/aircraft/N831SY

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every CFM International CFM56-7B27/B1 model are included.

## ADs that may apply (OpenAirDocs): 17 in force

### Matched by airframe (Boeing 737-83N)

None in force.

### Matched by engine (CFM International CFM56-7B27/B1 series)

- [AD 2023-05-05](https://openairdocs.org/ad/2023-05-05): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 98 more. Effective May 10, 2023
- [AD 2022-02-03](https://openairdocs.org/ad/2022-02-03): Turbine Engine Accessory Drive · CFM International CFM56-3, CFM56-3B, CFM56-3C and 34 more. Effective Mar 22, 2022
- [AD 2021-16-08](https://openairdocs.org/ad/2021-16-08): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 55 more. Effective Sep 28, 2021
- [AD 2018-26-01](https://openairdocs.org/ad/2018-26-01): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jan 10, 2019
- [AD 2018-09-51](https://openairdocs.org/ad/2018-09-51): Engine · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 7, 2018
- [AD 2015-18-04](https://openairdocs.org/ad/2015-18-04): 73-tooth gearshaft located in the engine accessory gearbox (AGB) · CFM International CFM56-3, CFM56-7B20, CFM56-7B20/2 and 47 more. Effective Oct 20, 2015
- [AD 2015-04-02](https://openairdocs.org/ad/2015-04-02): Dual engine thrust instability event · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Mar 31, 2015
- [AD 2010-13-09](https://openairdocs.org/ad/2010-13-09): Stage 3 low-pressure turbine (LPT) · CFM International CFM56-5, CFM56-5-A1/F, CFM56-5A4 and 88 more. Effective Jul 26, 2010
- [AD 2010-01-05](https://openairdocs.org/ad/2010-01-05): LP turbine rear frames · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 25 more. Effective Feb 18, 2010
- [AD 2009-11-02](https://openairdocs.org/ad/2009-11-02): HPC 4-9 spools · CFM International CFM56-2, CFM56-2A, CFM56-2B and 109 more. Effective Jun 23, 2009
- [AD 2008-03-09](https://openairdocs.org/ad/2008-03-09): Low pressure turbine rear frames (TRFs) · CFM International CFM56-7B18, CFM56-7B20, CFM56-7B22 and 10 more. Effective Mar 10, 2008
- [AD 2006-26-01](https://openairdocs.org/ad/2006-26-01): Fuel filters · CFM International CFM56-2, CFM56-2A, CFM56-2B and 93 more. Effective Jan 3, 2007
- [AD 2002-16-18](https://openairdocs.org/ad/2002-16-18): Low pressure turbine (LPT) nozzle segments · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 33 more. Effective Sep 18, 2002
- [AD 2002-13-03](https://openairdocs.org/ad/2002-13-03): Turbofan Engines · CFM International CFM56-2, CFM56-2A, CFM56-2B and 55 more. Effective Aug 1, 2002
- [AD 2001-11-05](https://openairdocs.org/ad/2001-11-05): No. 4 Bearings · CFM International CFM56-2, CFM56-2B, CFM56-3 and 45 more. Effective Jun 11, 2001
- [AD 2001-02-12](https://openairdocs.org/ad/2001-02-12): On-Wing Torque Inspection · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 11 more. Effective Feb 14, 2001
- [AD 98-21-23](https://openairdocs.org/ad/98-21-23): Electronic Engine Control · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 10 more. Effective Nov 2, 1998

### Historical (superseded or no longer in force)

- [AD 2021-10-09](https://openairdocs.org/ad/2021-10-09) (historical): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 82 more. Effective Jun 24, 2021
- [AD 2019-12-05](https://openairdocs.org/ad/2019-12-05) (historical): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 39 more. Effective Jul 5, 2019
- [AD 2018-18-01](https://openairdocs.org/ad/2018-18-01) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Oct 16, 2018
- [AD 2018-10-11](https://openairdocs.org/ad/2018-10-11) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 1, 2018
- [AD 2018-09-10](https://openairdocs.org/ad/2018-09-10) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective May 14, 2018
- [AD 2013-26-01](https://openairdocs.org/ad/2013-26-01) (historical): Oil dynamic seal assembly · CFM International CFM56-3, CFM56-3B, CFM56-3C and 52 more. Effective Feb 3, 2014
- [AD 2000-12-01](https://openairdocs.org/ad/2000-12-01) (historical): Critical Life-Limited Parts · CFM International CFM56-2, CFM56-2A, CFM56-2B and 54 more. Effective Dec 11, 2000

## Information bulletins (advisory) (1 in force)

- [SAIB NE-08-17R3](https://openairdocs.org/saib/NE-08-17R3): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued May 28, 2014
- [SAIB NE-08-17R2](https://openairdocs.org/saib/NE-08-17R2) (historical): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued Mar 7, 2011
- [SAIB NE-08-17R1](https://openairdocs.org/saib/NE-08-17R1) (historical): Propulsion Technology LLC Unapproved Repair. Issued May 22, 2008
- [SAIB NE-08-17](https://openairdocs.org/saib/NE-08-17) (historical): Propulsion Technologies International Unapproved Repair. Issued May 14, 2008

## NTSB investigations

None matched to N831SY.

## FAA accident and incident reports

None matched to N831SY.

## Service difficulty reports (38)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR SCNA20261016433](https://openairdocs.org/sdr/SCNA20261016433), Oct 15, 2026: LIGHT. INOPERATIVE. L2 LAV - EMERGENCY LIGHT IN LAV IS INOPERATIVE. L2 LAV LIGHT ALREADY ON MTI. SEE BACK OF LOG BOOK.
- [SDR SCNA20260825372](https://openairdocs.org/sdr/SCNA20260825372), Aug 24, 2026: HOOK. CORRODED. CORROSION ON HOOKS (2 EAS) OF LIFE LINE ASSY AT LH & RH EMERGENCY EXIT DOORS. (WORK IN PROGRESS)
- [SDR SCNA20260814359](https://openairdocs.org/sdr/SCNA20260814359), Aug 13, 2026: ARM REST. DAMAGED. CA RIGHT ARM REST HAS 2 VERY SHARP PIECES OF BROKEN METAL REMOVED SHARP EDGES FROM ARMREST SEAY OPS CHECKS GOOD PER AMM 25-11-00
- [SDR SCNA20260811344](https://openairdocs.org/sdr/SCNA20260811344), Aug 10, 2026: COVER. OUT OF ADJUST. SEAT 27E SHARP EDGE ON THE SPACE UNDER THE SEAT, IN FRONT OF 27E ADJUSTED SEAT MUX BOX COVER IAW AMM 25-22-00
- [SDR SCNA20260713291](https://openairdocs.org/sdr/SCNA20260713291), Jul 11, 2026: APU. DAMAGED. APU EXHAUST SHOOTING SPARKS, SMOKE ODOR IN CABIN/COCKPIT. FOUND MANY TURBINE BLADES TORN AND BENT ALONG THE AFT TIPS. APU WAS DEFERRED ON L/P 848721 ITEM 2.
- [SDR SCN2026F00002](https://openairdocs.org/sdr/SCN2026F00002), Jul 11, 2026: APU. FAILED. APU EXHAUST SHOOTING SPARKS, SMOKE ODOR IN CABIN/COCKPIT. FOUND MANY TURBINE BLADES TORN AND BENT ALONG THE AFT TIPS. APU WAS DEFERRED ON L/P 848721 ITEM 2.
- [SDR SCNA20260520209](https://openairdocs.org/sdr/SCNA20260520209), May 19, 2026: LIGHT SYS. INOPERATIVE. EMERGENCY LIGHTS AT R1 DOOR INTERIOR AND EXTERIOR INOPERATIVE. REMOVED AND REPLACED BATTERY ON POWER SUPPLY M 1674 I.A.W B737 AMM 33-51-06 REV 89 15 FEB 26 TEST
- [SDR SCNA20260430175](https://openairdocs.org/sdr/SCNA20260430175), Apr 29, 2026: BALL MAT. UNSECURE. FWD GALLEY MOONMAT TO CARPET TRANSITION STRIP CRACKED AND CAUSING A TRIPPING HAZARD. REPLACED FWD GALLEY MOONMAT TO CARPET TRANSITION STRIP. REF AMM 25-27-00
- [SDR SCNA20251226505](https://openairdocs.org/sdr/SCNA20251226505), Dec 23, 2025: RING. BROKEN. PLASTIC ON GIRT BAR BROKEN. R & R RING ON 1L GIRT BAR REF AMM 25-66-00.
- [SDR SCNA20251125451](https://openairdocs.org/sdr/SCNA20251125451), Nov 25, 2025: TRASH BIN. NO DISCREPANCY. AFT LEFT LAVATORY HAS A SHARP EDGE ON WASTE BASKET OPENING. INSPECTED WASTE BASKET, NO DEFECTS NOTED, REF AMM 25-40-08.
- [SDR SCNA20251120447S](https://openairdocs.org/sdr/SCNA20251120447S), Nov 19, 2025: APU. ODOR. REPLACED APU REF AMM 49-15-11 FUME EVENT IN CABIN.
- [SDR SCNA20251120447](https://openairdocs.org/sdr/SCNA20251120447), Nov 19, 2025: UNKNOWN. ODOR. RESIDUAL ODOR FROM FUME EVENT PRESENT IN FLIGHT DECK. NOT AS STRONG BUT STILL UNPLEASENT. OPEN
- [SDR SCNA20251119443](https://openairdocs.org/sdr/SCNA20251119443), Nov 18, 2025: A/C PACK. ODOR. SMOKE AND FUMES IN CABIN WHEN PACKS SELECTED ON. DUCT PRESSURE 10 PSI. DUCT SUPPLY TEMP 120. FOLLOWED FIM 21-00 TASK 806, INSPECTED APU FOR OVER SERVICING AND O
- [SDR SCNA20251021398](https://openairdocs.org/sdr/SCNA20251021398), Oct 16, 2025: A/C PACK. ODOR. A/C PACKS EMIT SMELLY SOCK SMELL ON DESCENT ON BOTH LEGS THRU APPROX 15000". PERFORMED GROUND PACK RUN TEST. COULD NOT DUPLICATE ON GROUND. BOTH PACKS OPERATE N
- [SDR SCNA20251016408](https://openairdocs.org/sdr/SCNA20251016408), Oct 14, 2025: FILTER. DIRTY. FOUL ODOR NOTED DURING DESCENT AND AFTER LANDING. ODOR IS STRONGEST AFTER LANDING IN THE AFT GALLEY. REMOVED AND REPLACED RECIRCULATION AIR FILTERS REF AMM 21-2
- [SDR SCNA20250818323](https://openairdocs.org/sdr/SCNA20250818323), Aug 16, 2025: FILTER. ODOR. DEFECT 802437: VERY PUNDJENT MUSTY SMELL COMING THROUGH THE AIR VENTS ON DECENT AND ONLY ON DESENT RESOLUTION: REMOVED AND REPLACED LEFT & RIGHT RECIRCULATION H
- [SDR SCNA20250731292](https://openairdocs.org/sdr/SCNA20250731292), Jul 31, 2025: OVEN. DIRTY. AFT OVENS NEED CLEANING.CREATE SMOKE WHEN USED SET OFF FIRE ALARM. REPLACED AFT OVENS INSERTS REF AMM 25-31-02
- [SDR SCNA20250731289](https://openairdocs.org/sdr/SCNA20250731289), Jul 31, 2025: SWITCH. CREW ERROR. FORWARD LAV. EMERGENCY LIGHT INOP. THE NO SMOKE/FASTEN SEAT BELT LIGHT SWITCH WAS IN THE OFF POS. FWD LAV. PER AMM 33-25-00
- [SDR SCNA20250721266](https://openairdocs.org/sdr/SCNA20250721266), Jul 19, 2025: BRACKET. LOOSE. DEFECT 801438: 1 R DOOR SLIDE BRACKETS LOOSE. REMOVED 1 R DOOR SLIDE PACK. INSTALLED NEW RIVET IN RIGHT GRIT BAR RETAINER CLIP.IAW SRM 51-40-02.INSTALLED SLIDE 
- [SDR SCNA20250707241](https://openairdocs.org/sdr/SCNA20250707241), Jul 6, 2025: BRACKET. LOOSE. 1R GIRT BAR RIGHT SIDE HOLDER ON DOOR LOOSE. TIGHTENED R/H GIRT BAR HOLDER AT 1-R PER AMM 25-66-01
- [SDR SCNA20250602185](https://openairdocs.org/sdr/SCNA20250602185), May 31, 2025: GIRT BAR. INOPERATIVE. DEFECT 813288: DOOR 1R GIRT BAR INOP - RESOLUTION: ADJUSTED GIRT BAR CLIP IAW AMM 52-00-00. GIRT BAR SECURED IN PLACE.
- [SDR SCNA20250314075](https://openairdocs.org/sdr/SCNA20250314075), Mar 13, 2025: DOOR. OUT OF ADJUST. WORK ORDER 93947 NR00001: TCC: INSPECT FLIGHT DECK DOOR FOR “RUBBING” ON HEADER AND POST DUE TO UNKNOWN IF DOOR IS DIFFICULT TO OPEN DUE TO DRAGGING OR SOME OTH
- [SDR SCNA20250306065](https://openairdocs.org/sdr/SCNA20250306065), Mar 6, 2025: GIRT BAR. NO DISCREPANCY. DEFECT 795864: 1R GIRT BAR HOLDER (RIGHT SIDE) LOOSE. - - RESOLUTION: INSPECTED 1R GRIT BAR RETAINING CLIP AND FLOOR MOUNTED BRACKET IAW AMM 25-66-01, AND FOUND
- [SDR SCNA20250108007](https://openairdocs.org/sdr/SCNA20250108007), Jan 7, 2025: LIGHT. CRACKED. WORK ORDER 92466, NR00004: FWD 2FT OF CABIN LH AND RH SIDE FLOOR PATH ILLUMINATION STRIP HAS CRACKS. . RESOLUTION: REPLACED CRACKED FLOORPATH ILLUMINATION STRIP
- [SDR SCNA20241217398](https://openairdocs.org/sdr/SCNA20241217398), Dec 16, 2024: DOOR. NO DISCREPANCY. DEFECT 794312: FWD ENTRY DOOR REPORTED DIFFICULT TO OPERATE. RESOLUTION: OPERATED L1 DOOR IAW AMM 52-11-00. NO DEFECTS FOUND, OPS CHECK GOOD
- [SDR SCNA20241202380](https://openairdocs.org/sdr/SCNA20241202380), Nov 30, 2024: BRACKET. LOOSE. BRACKETS DOOR 1R THAT HOLD GIRT BAR IN DISARMED POSITION NEED TO BE TIGHTENED. ADJUSTED GIRT BAR CLIPS REF AMM 25-66-01.
- [SDR SCNA20241114365](https://openairdocs.org/sdr/SCNA20241114365), Oct 21, 2024: COFFEEMAKER. ODOR. DEFECT 698801: FWD GALLEY COFFEEMAKER HAS CHEMICAL SMELL WHEN BREWING COFFEE. RESOLUTION: FLUSHED PORTABLE WATER SYSTEM IAW AMM 12-14-00. PERFORMED OPS CHECKS I
- [SDR SCNA20241114364](https://openairdocs.org/sdr/SCNA20241114364), Oct 20, 2024: COFFEEMAKER. ODOR. DEFECT 698800: AFT COFFEE MAKER HAS CHEMICAL SMELL. RESOLUTION: FLUSHED POTABLE WATER SYSTEM IAW AMM 12-14-00. PERFORMED OPS CHECKS IAW AMM 38-10-00. NO EVIDENC
- [SDR SCNA20241018330](https://openairdocs.org/sdr/SCNA20241018330), Oct 13, 2024: BRACKET. DAMAGED. DEFECT 698279: DOOR 1R BRACKET DOESN'T HOLD BAR TIGHT ON RIGHT SIDE. ALSO THERE IS A JAGGED PIECE OF METAL PROTRUDING OUT FROM THE BOTTOM RIGHT CORNER OF DOOR. 
- [SDR SCNA20230828211](https://openairdocs.org/sdr/SCNA20230828211), Jul 19, 2023: UNKNOWN. UNKNOWN. DEFECT 746816: RH FWD EMERGENCY EXIT OVERWING DOOR EMERGENCY LIGHT INOP ( EXTERIOR EMERGENCY LIGHTING SYSTEM ) - - - RESOLUTION: REMOVED AND REPLACED R2 EMERLIG
- [SDR SCNA20230307093](https://openairdocs.org/sdr/SCNA20230307093), Mar 6, 2023: NONE. NONE. DEFECT 744450: MULTIPLE RAMP STAFF ADVISED THE CREW THEY SAW SPARKS COMING FROM THE #2 ENGINE UPON PARKING WHEN UNDER POWER MC NOTIFIED WB 10281. RESOLUTION: PE
- [SDR SCNA20230202051](https://openairdocs.org/sdr/SCNA20230202051), Feb 1, 2023: NOT ENTERED. NOT ENTERED. DEFECT 730599: AFT RIGHT OVEN SMELLS LIKE AN ELECTRICAL SMELL WHEN IN USE. RESOLUTION: COULD NOT DUPLICATE IAW AMM 25-31-01. OK FOR SERVICE.
- [SDR SCNA20221229152](https://openairdocs.org/sdr/SCNA20221229152), Dec 27, 2022: GIRT BAR. OUT OF ADJUST. L1 GIRT BAR ON SLIDE DIFFICULT TO ARM/DISARM. ADJUSTED GIRT BAR REF AMM 25-66-01. OK FOR SERVICE.
- [SDR SCNA20220920108](https://openairdocs.org/sdr/SCNA20220920108), Sep 16, 2022: NONE. NONE. DEFECT 725253: LOSS OF SYSTEM B HYDRAULIS IN FLIGHT. RESOLUTION: FOUND PLUG ON B SYSTEM HYD MODULE TO BE LOOSE TIGHTENED PLUG R& R # 2 ENG ENGINE DRIVE PUMP PER
- [SDR SCNA20210524056](https://openairdocs.org/sdr/SCNA20210524056), May 19, 2021: PROXIMITY SENSOR. MALFUNCTIONED. L/E FLAP #5 DISAGREE AT FLAP SETTINGS 1 AND 5. R & R RIGHT #5 SLAT INBOARD PROX SENSOR PER AMM 27-88-11. ALL OPS AND INDICATIONS NORMAL. DECLARED EMERGENCY CREW
- [SDR SCNA20210318015](https://openairdocs.org/sdr/SCNA20210318015), Mar 18, 2021: COMPUTER. LEAKING. FLIGHT ATTENDANTS IN THE REAR OF THE AIRCRAFT HAD A FUME EVENT ON DESCENT THROUGH ABOUT 10,000 FT PERFORMED HYDRAULIC SYSTEM EXTERNAL LEAKAGE CHECK REF AMM 29-0
- [SDR SCNA202103180001](https://openairdocs.org/sdr/SCNA202103180001), Mar 18, 2021: COMPUTER. LEAKING. FLIGHT ATTENDANTS IN THE REAR OF THE AIRCRAFT HAD A FUME EVENT ON DESCENT THROUGH ABOUT 10,000 FT. PERFORMED HYDRAULIC SYSTEM EXTERNAL LEAKAGE CHECK REF AMM 29-
- [SDR SCNA20210112001](https://openairdocs.org/sdr/SCNA20210112001), Jan 10, 2021: CONTROLLER. MALFUNCTIONED. ON DEPARTURE AUTOFAIL LIGHT ILLUMINATED NNC COMPLETED. IN CRUISE FLIGHT OFF SCHEDULE DESCENT LIGHT ILLUMINATED FOLLOWED BY AUTO FAIL LIGHT ILL AGAIN AND THEN PA

## STCs that may be installed (OpenAirDocs) (2)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (CFM International CFM56-7B27/B1 series)

- [STC SE04840NY](https://openairdocs.org/stc/SE04840NY): Installation of HarcoSemco Exhaust Gas Temperature (EGT) Electrical Harnesses in CFM56-7 engine. Kilroy Aviation LLC
- [STC SE03036CH](https://openairdocs.org/stc/SE03036CH): Application of a deep compressive stress layer using a Low Plasticity Burnishing (LPB) process on CFM56-7 Series Engines Stage 1 High Pressure Compressor (HPC) Blade Dovetails in accordance with Delta Air Lines Inc. Drawing No. 72-0396, Revision B, dated November 3, 2011, or later FAA Approved revision. Delta Air Lines Inc

## Related

- Other Boeing 737-83N aircraft: https://openairdocs.org/model/boeing-737-83n/aircraft.md
- The CFM International CFM56-7B27/B1 series engine: https://openairdocs.org/engine/cfm-international-cfm56-7b27-b1-series.md

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