N831SY
Registered owner: SUN COUNTRY INC, MN (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
36 reports on file, 2021-01-10 – 2026-08-13.
Part: ARM REST — DAMAGED (ZONE 200) · airframe 70,705 hrs · 31,677 cycles
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
Part: COVER — OUT OF ADJUST (ZONE 200) · airframe 70,690 hrs · 31,671 cycles
SEAT 27E SHARP EDGE ON THE SPACE UNDER THE SEAT, IN FRONT OF 27E ADJUSTED SEAT MUX BOX COVER IAW AMM 25-22-00
Part: APU — DAMAGED (ZONE 100) · airframe 70,630 hrs · 31,646 cycles
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.
Part: APU — FAILED (ZONE 100) · airframe 70,630 hrs · 31,646 cycles
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.
Part: LIGHT SYS — INOPERATIVE (ZONE 200) · airframe 70,345 hrs · 31,512 cycles
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 SATISFACTORY.
Part: BALL MAT — UNSECURE (ZONE 200) · airframe 70,265 hrs · 31,476 cycles
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
Earlier reports · 2021–2025 · 30 reports
2025
Part: RING — BROKEN (GIRT BAR) · airframe 69,693 hrs · 31,273 cycles
PLASTIC ON GIRT BAR BROKEN. R & R RING ON 1L GIRT BAR REF AMM 25-66-00.
Part: TRASH BIN — NO DISCREPANCY (ZONE 900) · airframe 69,499 hrs · 31,172 cycles
AFT LEFT LAVATORY HAS A SHARP EDGE ON WASTE BASKET OPENING. INSPECTED WASTE BASKET, NO DEFECTS NOTED, REF AMM 25-40-08.
Part: APU — ODOR (ZONE 100) · airframe 69,476 hrs · 31,162 cycles
REPLACED APU REF AMM 49-15-11 FUME EVENT IN CABIN.
Part: UNKNOWN — ODOR (ZONE 200) · airframe 69,476 hrs · 31,162 cycles
RESIDUAL ODOR FROM FUME EVENT PRESENT IN FLIGHT DECK. NOT AS STRONG BUT STILL UNPLEASENT. OPEN
Part: A/C PACK — ODOR (ZONE 100) · airframe 69,472 hrs · 31,161 cycles
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 OIL CONTAMINATION IN THE BLEED AIR SYSTEM AND FOUND NO CONTAMINATION OF OVER SERVICING. INSPECTED LH AND RH PACK SYSTEMS FOR OIL CONTAMINATION AND FOUND NONE. INSPECTED
Part: A/C PACK — ODOR (ZONE 100) · airframe 69,292 hrs · 31,074 cycles
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 NORMALLY. I REF AMM 21-51-00
Part: FILTER — DIRTY (ZONE 100) · airframe 69,270 hrs · 31,066 cycles
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 21-25-01 OPS CHECK GOOD
Part: FILTER — ODOR (ZONE 100) · airframe 69,001 hrs · 30,921 cycles
DEFECT 802437: VERY PUNDJENT MUSTY SMELL COMING THROUGH THE AIR VENTS ON DECENT AND ONLY ON DESENT RESOLUTION: REMOVED AND REPLACED LEFT & RIGHT RECIRCULATION HEPA FILTERS. REF. 21-25-01-400-801. REMOVED AND REPLACED EQIP COOLING FAN FILTER REF 27-21-01-400-801. PERFORMED OPS CHECK ON B OTH. NO ISSUE FOUND.
Part: OVEN — DIRTY (ZONE 900) · airframe 68,908 hrs · 30,885 cycles
AFT OVENS NEED CLEANING.CREATE SMOKE WHEN USED SET OFF FIRE ALARM. REPLACED AFT OVENS INSERTS REF AMM 25-31-02
Part: SWITCH — CREW ERROR (ZONE 200) · airframe 68,900 hrs · 30,882 cycles
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
Part: BRACKET — LOOSE (GIRT BAR) · airframe 68,786 hrs · 30,833 cycles
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 PACK IAW AMM 25-66-01 OK FOR SERVICE
Part: BRACKET — LOOSE (GIRT BAR) · airframe 68,689 hrs · 30,797 cycles
1R GIRT BAR RIGHT SIDE HOLDER ON DOOR LOOSE. TIGHTENED R/H GIRT BAR HOLDER AT 1-R PER AMM 25-66-01
Part: GIRT BAR — INOPERATIVE (ZONE 800) · airframe 68,370 hrs · 30,663 cycles
DEFECT 813288: DOOR 1R GIRT BAR INOP - RESOLUTION: ADJUSTED GIRT BAR CLIP IAW AMM 52-00-00. GIRT BAR SECURED IN PLACE.
Part: DOOR — OUT OF ADJUST (ZONE 800) · airframe 67,850 hrs · 30,448 cycles
WORK ORDER 93947 NR00001: TCC: INSPECT FLIGHT DECK DOOR FOR âRUBBINGâ ON HEADER AND POST DUE TO UNKNOWN IF DOOR IS DIFFICULT TO OPEN DUE TO DRAGGING OR SOME OTHER REASON. REFERENCE AMM 52-51-00400-801 FIG. 401 SHEET 2 FOR CLEARANCES TO HEADER AND POST. ADJUST IF NEEDED. ALSO, REFERENCE CMM 52-51-01 PAGE 1013. - - RESOLUTION: REMOVED AND REPLACED FD DOOR ELECTRIC STRIKE ASSY REF CMM 52-51-01 OPS CHECK GOOD
Part: GIRT BAR — NO DISCREPANCY (ZONE 800) · airframe 67,768 hrs · 30,419 cycles
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 GRIT BAR TO BE SECURE IN BOTH POSITIONS.
Part: LIGHT — CRACKED (ZONE 200) · airframe 67,372 hrs · 30,280 cycles
WORK ORDER 92466, NR00004: FWD 2FT OF CABIN LH AND RH SIDE FLOOR PATH ILLUMINATION STRIP HAS CRACKS. . RESOLUTION: REPLACED CRACKED FLOORPATH ILLUMINATION STRIPS IN FWD CABIN LH AND RH SIDE OF AISLE. REF AMM 33-51-15.
2024
Part: DOOR — NO DISCREPANCY (MAIN) · airframe 67,173 hrs · 30,210 cycles
DEFECT 794312: FWD ENTRY DOOR REPORTED DIFFICULT TO OPERATE. RESOLUTION: OPERATED L1 DOOR IAW AMM 52-11-00. NO DEFECTS FOUND, OPS CHECK GOOD
Part: BRACKET — LOOSE (R1 GIRT BAR) · airframe 67,061 hrs · 30,166 cycles
BRACKETS DOOR 1R THAT HOLD GIRT BAR IN DISARMED POSITION NEED TO BE TIGHTENED. ADJUSTED GIRT BAR CLIPS REF AMM 25-66-01.
Part: COFFEEMAKER — ODOR (ZONE 900) · airframe 66,802 hrs · 30,045 cycles
DEFECT 698801: FWD GALLEY COFFEEMAKER HAS CHEMICAL SMELL WHEN BREWING COFFEE. RESOLUTION: FLUSHED PORTABLE WATER SYSTEM IAW AMM 12-14-00. PERFORMED OPS CHECKS IAW AMM 38-10-00 NO EVIDENCE OF SMELL, AC OK FOR SEVICE.
Part: COFFEEMAKER — ODOR (ZONE 900) · airframe 66,794 hrs · 30,041 cycles
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 EVIDENCE OF CHEMICAL SMELL. A/C OK FOR SERVICE. THIS CLEARS MEL
Part: BRACKET — DAMAGED (GIRT BAR) · airframe 66,726 hrs · 30,014 cycles
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. - - RESOLUTION: ON DOOR 1R ADJ BAR BRACKET AND REMOVED SHARP PEICE OF METAL. REF AMM 25-66-00
2023
Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 64,446 hrs · 28,925 cycles
DEFECT 746816: RH FWD EMERGENCY EXIT OVERWING DOOR EMERGENCY LIGHT INOP ( EXTERIOR EMERGENCY LIGHTING SYSTEM ) - - - RESOLUTION: REMOVED AND REPLACED R2 EMERLIGHT CHARGE ASSY REF AMM 33-51-00 OPS CHECK GOOD THIS CLEARS MEL 33-14 MDDR#8311M
Part: NONE — NONE · airframe 63,597 hrs · 28,563 cycles
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: PERFORMED GVI INSPECTION OF ENGINE #2 IAW AMM 05-41-04-210-806.
Part: NOT ENTERED — NOT ENTERED · airframe 63,340 hrs · 28,472 cycles
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.
2022
Part: GIRT BAR — OUT OF ADJUST (L1 DOOR) · airframe 63,071 hrs · 28,374 cycles
L1 GIRT BAR ON SLIDE DIFFICULT TO ARM/DISARM. ADJUSTED GIRT BAR REF AMM 25-66-01. OK FOR SERVICE.
Part: NONE — NONE · airframe 62,428 hrs · 28,118 cycles
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 AMM 29-11-11 OPS & LEAK CHECK GOOD OK FOR SERVICE
2021
Part: PROXIMITY SENSOR — MALFUNCTIONED (LE FLAPS) · airframe 59,075 hrs · 26,829 cycles
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 HAD A FLAP DISAGREE LIGHT. LANDED IN MSN SAFELY.
Part: COMPUTER — LEAKING (ELEVATOR FEEL) · airframe 58,560 hrs · 26,645 cycles
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 29-00-00-790-801. FOUND LEAK AT ELEVATOR FEEL COMPUTER, LEAKING ONTO APU BLEED AIR DUCT CAUSING FUMES. TORQUED LOOSE UNION FITTING REF AMM 27-31-37-400-801, LEAK CHECK GOOD NO DEFECTS NOTED
Part: COMPUTER — LEAKING (ELEVATOR FEEL) · airframe 58,560 hrs · 26,645 cycles
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 29-00-00-790-801. FOUND LEAK AT ELEVATOR FEEL COMPUTER, LEAKING ONTO APU BLEED AIR DUCT CAUSING FUMES. TORQUED LOOSE UNION FITTING REF AMM 27-31-37-400-801, LEAK CHECK GOOD NO DEFECTS NOTED
Part: CONTROLLER — MALFUNCTIONED (CABIN PRESSURE) · airframe 58,085 hrs · 26,482 cycles
ON DEPARTURE AUTOFAIL LIGHT ILLUMINATED NNC COMPLETED. IN CRUISE FLIGHT OFF SCHEDULE DESCENT LIGHT ILLUMINATED FOLLOWED BY AUTO FAIL LIGHT ILL AGAIN AND THEN PANEL WENT BLANK. INFORMED OVER ACARS LOSS OF CABIN PRESSURE, DECLARED EMERGENCY. DIVERSION TO DEN FLIGHT LANDED SAFELY IN DEN. FOUND THAT NR 1 CONTROLLER WOULD NOT POWER UP. REPLACED NR 1 CABIN PRESSURE CONTROLLER, REF AMM 21-31-01 CHECKS GOOD.