# N837SY: 2012 Boeing 737-8KN

- Status: Valid registration
- Airframe: [Boeing 737-8KN](https://openairdocs.org/model/boeing-737-8kn) (registry code 1384612, 191 seats)
- Engine: [CFM International CFM56-7B series](https://openairdocs.org/engine/cfm-international-cfm56-7b-series) (registry code 13803)
- Serial number: 40252
- Year built: 2012
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: February 20, 2020
- Certificate issued: February 19, 2020
- Expires: February 28, 2027
- Mode S code: AB7402
- 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=837SY
- Page: https://openairdocs.org/aircraft/N837SY

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 CFM56-7B model are included.

## ADs that may apply (OpenAirDocs): 19 in force

### Matched by airframe (Boeing 737-8KN)

None in force.

### Matched by engine (CFM International CFM56-7B 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
- [AD 98-19-20](https://openairdocs.org/ad/98-19-20): Hydromechanical Unit · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 7 more. Effective Oct 7, 1998
- [AD 98-14-51](https://openairdocs.org/ad/98-14-51): Accessory Gearbox · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 10 more. Effective Oct 1, 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 N837SY.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20230509003359A](https://openairdocs.org/incident/20230509003359A), May 9, 2023: Boeing 737-8KN (N837SY), Richmond, VA, Substantial damage. On 09 may 2023, at Richmond International Airport (ric) Virginia, [privacy data omitted] (737-800), preparing for [privacy data omitted], was struck by the…

## Service difficulty reports (26)

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 SCNA20260716309](https://openairdocs.org/sdr/SCNA20260716309), Jul 16, 2026: DIVIDER. PEELING. FWD GALLEY FLOORING DIVIDER IS PEELING UPWARD AND IS A HAZARD WHEN PAX WALKING ACROSS. REPLACED GALLEY, ISLE THRESHOLD IAW AMM 25-27-21. OK FOR SERVICE.
- [SDR SCNA20260325139](https://openairdocs.org/sdr/SCNA20260325139), Mar 24, 2026: LIGHT. UNSECURE. 12D AISLE LIGHT STRIP AND CARPET STICKING UP. SECURED LIGHT STRIP REF AMM 33-51-15 OK FOR SERVICE
- [SDR SCNA20260209063](https://openairdocs.org/sdr/SCNA20260209063), Feb 9, 2026: LIGHT. INOPERATIVE. OVERHEAD PANEL EMERGENCY LIGHTS NOT ARMED, LAMP INOPERATIVE. R & R EMERGENCY LIGHTS NOT ARMED LIGHT ASSY REF AMM 33-18-00. OPS TEST GOOD.
- [SDR SCNA20260209061](https://openairdocs.org/sdr/SCNA20260209061), Feb 8, 2026: LAMP. INOPERATIVE. EMERGENCY EXIT LAMP INOP. MAINT NOTIFIED TS 31882. INSPECTED EMERGENCY EXIT LIGHTS IAW AMM 33-51-00. NO DEFECTS NOTED. ACFT OKAY FOR SERVICE.
- [SDR SCNA20260127043](https://openairdocs.org/sdr/SCNA20260127043), Jan 24, 2026: SMOKE DETECTOR. FAULTED. AFT RIGHT LAVATORY SMOKE DETECTOR BEEPING. OPEN
- [SDR SCNA20260116031](https://openairdocs.org/sdr/SCNA20260116031), Jan 15, 2026: SLIDE. DISLODGED. R1 DOOR-A PIECE OF SLIDE PACKAGING IS DISLODGED, CAN ONLY SEE WHEN ARMED. REINSERTED LOOSE MATERIAL INTO SLIDE IAW AMM 25-66-01. OKAY FOR SERVICE.
- [SDR SCNA20251229510](https://openairdocs.org/sdr/SCNA20251229510), Dec 29, 2025: CONTROL PANEL. CONTAMINATED. EXCESSIVE SNOW CONTAMINATION IN AFT GALLEY BY L2 DOOR CAUSING EMER LIGHTS TO FLICKER AND PA SYS. TO BE INTERMITTENT. R & R AFT FA CONTROL PANEL REF AMM 31-15-21
- [SDR SCNA20251205461](https://openairdocs.org/sdr/SCNA20251205461), Dec 4, 2025: GIRT BAR. OUT OF POSITION. GIRT BAR, DOOR L1 STUCK IN UNARMED POSITION. REPOSITIONED THE GIRT BAR ON L1 DOOR OK FOR SERVICE IAW AMM 25-66-02
- [SDR SCNA20251118442](https://openairdocs.org/sdr/SCNA20251118442), Oct 29, 2025: SKIN. CRACKED. CRACK ON HOLE #7 AT 12 O´CLOCK POSITION, WING INBOARD LEADING EDGE SKIN PANEL FASTENER, KRAS 206, AT WING LEFT IN REF. CARD ENG-57SCA--11486. CRACK ON HOLE #7 A
- [SDR SCNA20251027409S](https://openairdocs.org/sdr/SCNA20251027409S), Oct 23, 2025: ATTACH ANGLE. BROKEN. BROKEN BASE OF STRAP EMERGENCY EXIT DOOR 832 & 842. BASE OF STRAP EMERGENCY EXIT DOOR 832 WAS REPLACED FOR ONE NEW PER B737-800 AMM 52-22-51 ALSO 842 WERE REMOV
- [SDR SCNA20251027409](https://openairdocs.org/sdr/SCNA20251027409), Oct 23, 2025: STRAP. BROKEN. BROKEN BASE OF STRAP EMERGENCY EXIT DOOR 832 & 842.
- [SDR SCNA20251118441](https://openairdocs.org/sdr/SCNA20251118441), Oct 21, 2025: FRAME. CRACKED. WO 88374, NR 00132 CRACK ON FRAME STA 312 & S-6L AT PASSENGER CABIN FWD ENTRY DOOR. : SUMMARY: FRAME STA 312 & S6L AT PASSENGER CABIN FWD ENTRY DOOR WAS REPAIRE
- [SDR SCNA20251023406](https://openairdocs.org/sdr/SCNA20251023406), Oct 21, 2025: SOLENOID. FAULTED. FLIGHT LOCK SOLENOID OF AUTOMATIC EMERGENCY EXIT DOOR RH / FWD SIDE NOT WORKING CORRECTLY. OPEN
- [SDR SCNA20251022403S](https://openairdocs.org/sdr/SCNA20251022403S), Oct 18, 2025: COVER. BROKEN. BROKEN COVER OF EXIT EMERGENCY LIGHT OF DOOR R1 & R2. COVERS OF EXIT EMERGENCY LIGHT OF DOOR R1 & R2 WERE REPLACED PER B737-800 AMM 33-51-01, TEST OK.
- [SDR SCNA20251022403](https://openairdocs.org/sdr/SCNA20251022403), Oct 18, 2025: COVER. BROKEN. BROKEN COVER OF EXIT EMERGENCY LIGHT OF DOOR R1 & R2. OPEN
- [SDR SCNA20260218088](https://openairdocs.org/sdr/SCNA20260218088), Oct 10, 2025: LIGHT. INOPERATIVE. FWD & AFT GALLEY NO SMOKING SIGNS ARE NOT ILLUMINATED. NO SMOKING LIGHTS DEACTIVATED FOR SKY INTERIOR REF AMM 33-20-00
- [SDR SCNA20250827333](https://openairdocs.org/sdr/SCNA20250827333), Aug 27, 2025: LENS. DAMAGED. FORWARD GALLEY EMERGENCY LIGHT UNDER FLIGHT ATTENDANT JUMPSEAT NEAR DOOR 1L DAMAGED. FOUND L1 DOOR EMERGENCE LIGHT LENS IN GOOD CONDITION AND OPERATIONAL. THE D
- [SDR SCNA20250321077](https://openairdocs.org/sdr/SCNA20250321077), Mar 20, 2025: CABLE. FIRE. DEFECT 789270: GPU CABLE CAUGHT FIRE. - - RESOLUTION: POWER CORD SHORTED OUT ABOUT 8 INCHES DOWN FROM CONNECTION. GVI OF POWER CONNECTION SHOWS NO DAMAGE TO AIR
- [SDR SCNA20250306066](https://openairdocs.org/sdr/SCNA20250306066), Mar 6, 2025: OVEN. ODOR. DEFECT 797395: AFT GALLEY OVEN PRODUCES BAD SMELLS & SOME SMOKE WHEN IN USE. PLZ REPLACE. - - RESOLUTION: REMOVED AND REPLACED AFT GALLEY OVEN IAW AMM 25-30-61 
- [SDR SCNA20241007323](https://openairdocs.org/sdr/SCNA20241007323), Sep 28, 2024: FITTING. DETACHED. DEFECT 733953: FWD 1L DOOR GIRT BAR PLASTIC FITTING FELL OFF GIRT BAR. - - RESOLUTION: REINSTALLED FITTING PER AMM 25-66-01.
- [SDR SCNA20241007223](https://openairdocs.org/sdr/SCNA20241007223), Sep 28, 2024: FITTING. DETACHED. DEFECT 733953: FWD 1L DOOR GIRT BAR PLASTIC FITTING FELL OFF GIRT BAR - - RESOLUTION: REINSTALLED FITTING PER AMM 25-66-01.
- [SDR SCNA20240116007](https://openairdocs.org/sdr/SCNA20240116007), Jan 1, 2024: LIGHT. UNKNOWN. DEFECT: W/O 84120 NRC00007 R1 DOOR OUTSIDE EMER LIGHT IS BURNED OUT. - - RESOLUTION: RELAMPED R1 EXTERIOR EMERGENCY LIGHT. IAW AMM 33-51-04. OPS CHECK GOOD.
- [SDR SCNA20231129240](https://openairdocs.org/sdr/SCNA20231129240), Nov 27, 2023: UNKNOWN. UNKNOWN. DEFECT 761004 - PHOTOLUMINESCENT STRIP LOOSE AT ROWS 11 & 12ABC. - RESOLUTION: RE-ATTACHED PHOTOLUMINESCENT STRIP AT SEAT ROWS 11 & 12ABC REF AMM 33 51-15
- [SDR SCNA20240310116](https://openairdocs.org/sdr/SCNA20240310116), Oct 24, 2023: ANGLE. CRACKED. DEFECT WO 74692 NR00038: INITIAL INSPECTION: CRACKED ANGLES BTW FRAME AND INTERCOSTAL, (4 EAS) BTW STA 500F TO 500 H & S-26R AND (1 EA) ON STA 500H & S-26L AT F
- [SDR SCNA20230117041](https://openairdocs.org/sdr/SCNA20230117041), Jan 13, 2023: PUMP. LOW PRESSURE. HYDRAULIC SYSTEM A ENGI 1 LOW PRESSURE LIGHT IILLUMINATED FOLLOWED BY LOSS OF HYDRAULIC GUQNTITY IN FLIGHT IN SYSTEM A. RAN QRH AND LANDED UNEVENTFULLY OVERWEIG
- [SDR SCNA20221020134](https://openairdocs.org/sdr/SCNA20221020134), Oct 19, 2022: LIGHT. NONE. DEFECT WORK ORDER 74336 NR00001: DURING EMERGENCY OPS CHK FOUND LEFT AFT OVERWING LIGHT INOP. RESOLUTION: R & R LEFT AFT OVERWING EMERGENCY LIGHT IAW AMM 33-51-

## 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 CFM56-7B series)

- [STC SE04840NY](https://openairdocs.org/stc/SE04840NY): Installation of HarcoSemco Exhaust Gas Temperature (EGT) Electrical Harnesses in CFM56-7 engine. Kilroy Aviation LLC. Lists CFM56-7B20
- [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. Lists CFM56-7B20

## Related

- Other Boeing 737-8KN aircraft: https://openairdocs.org/model/boeing-737-8kn/aircraft.md
- The CFM International CFM56-7B series engine: https://openairdocs.org/engine/cfm-international-cfm56-7b-series.md

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