# N401YK: 1993 Boeing 737-436, registration cancelled 2026-10-06

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 6, 2026
- Status when cancelled: Valid registration
- Airframe: [Boeing 737-436](https://openairdocs.org/model/boeing-737-436) (registry code 13844HC)
- Engine: [CFM International CFM56-3C1](https://openairdocs.org/engine/cfm-international-cfm56-3c1) (registry code 13077)
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE) (OpenAirDocs)
- Serial number: 25860
- Year built: 1993
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: June 3, 2017
- Certificate issued: April 20, 2021
- Last registry action: May 5, 2023
- Mode S code: A4B288
- Owner when cancelled: [Nas Aircraft Leasing Company LLC](https://openairdocs.org/faa-owner/NAS%20AIRCRAFT%20LEASING%20COMPANY%20LLC)
- Location: [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage)
- Owner type: LLC
- Owner's area on the map: 61.1637° N, 149.9966° W: Placed by OpenAirDocs at the center of ZIP code 99502, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N401YK
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=401YK
- Page: https://openairdocs.org/deregistered/N401YK-2026-10-06

From the FAA registry file of November 5, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Boeing 737-436: https://openairdocs.org/model/boeing-737-436.md

## Service difficulty reports (48)

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

- [SDR NACA2024120200001](https://openairdocs.org/sdr/NACA2024120200001), Dec 2, 2024: SEAT TRACK. CRACKED. SEAT TRACK CRACKED BELOW STOP FITTING AT BS 887 LBL 45.50. SEAT TRACK REMOVED AND REPLACED FROM 480-510 AT LBL 24.75 IAW 737-400 SRM 51-4002 REPAIR OPTION 2.
- [SDR NACA2023122200002](https://openairdocs.org/sdr/NACA2023122200002), Dec 22, 2023: SMOKE DETECTOR. FAILED. LAVATORY SMOKE ALARM ACTIVATED IN FLIGHT, RESULTING IN MI @ 1740Z. DEFERRED PER MEL 26-16-02 CAT D. LAV SMOKE DETECTOR REMOVED AND REPLACED. PART INFO UNKNOWN T
- [SDR NACA2023112800001](https://openairdocs.org/sdr/NACA2023112800001), Nov 28, 2023: POWER SUPPLY. FAILED. OPERATIONAL TEST FOUND THE EMERGENCY LIGHT FAILURE, EQUIP.NO: M1675, S/N:32476. REPLACED THE EMERGENCY LIGHT POWER SUPPLY REF AMM 33-51-51-962-016.
- [SDR NACA2023102700001](https://openairdocs.org/sdr/NACA2023102700001), Oct 27, 2023: UNKNOWN. UNKNOWN. DURING NRC: CA1502/253 AFTER CORROSION REMOVED CHK OVER LIMIT. REMOVED DAMAGED SKIN AT #3 SLAT T/E WEDGE UPPER SURFACE BETWEEN SS 36.5 AND SS 38.3. MADE THE REP
- [SDR NACA2023102600001](https://openairdocs.org/sdr/NACA2023102600001), Oct 26, 2023: UNKNOWN. UNKNOWN. CABIN WINDOW FRAME GOT CORROSION ON STA 767+10 (R33) 1. BS767+7 S-11R+1.5'' 2. BS767+16 S-11R+13''. REPAIRED PER SRM 56-20-02
- [SDR NACA2023102100003](https://openairdocs.org/sdr/NACA2023102100003), Oct 21, 2023: UNKNOWN. UNKNOWN. CABIN WINDOW FRAME GOT CORROSION ON STA 727G+10(L30). BS727+5, S-11L+15". REPAIRED PER SRM 56-20-02 AND EO 737-56-007
- [SDR NACA2023102100002](https://openairdocs.org/sdr/NACA2023102100002), Oct 21, 2023: UNKNOWN. UNKNOWN. CABIN WINDOW FRAME GOT CORROSION ON STA 727F+10(L29).1.BS727+6,S-11L+8" 2.BS727+11,S-11L+16". REPAIRED PER SRM 56-20-02
- [SDR NACA2023102100001](https://openairdocs.org/sdr/NACA2023102100001), Oct 21, 2023: UNKNOWN. UNKNOWN. CABIN WINDOW FRAME CORROSION ON STA 727C +10 (L26), REPAIRED PER SRM 56-20-02
- [SDR NACA2023102000001](https://openairdocs.org/sdr/NACA2023102000001), Oct 20, 2023: LIGHT. FAILED. OPERATIONAL TEST FOUND EMERGENCY LIGHT FAILURE. REPLACE EMERGENCY LIGHT IAW AMM 33-51-51-962-016. OPS TEST NORMAL.
- [SDR 2022F00063](https://openairdocs.org/sdr/2022F00063), Feb 23, 2022: HINGE FITTING. CRACKED. FORWARD ENTRY DOOR LOWER HINGE FITTING PN: 65C36075-1; INSTALLED FITTING IS CRACKED.
- [SDR 2022FA0000097](https://openairdocs.org/sdr/2022FA0000097), Feb 23, 2022: HINGE FITTING. CRACKED. FORWARD ENTRY DOOR LOWER HINGE FITTING PN: 65C36075-1; INSTALLED FITTING IS CRACKED.
- [SDR 2022F00105](https://openairdocs.org/sdr/2022F00105), Feb 10, 2022: TEE ANGLE. CORRODED. AFT CARGO FLOOR PANEL STA 727-STA 727D SHOWS AMUMINUM BUT-JOINT STRIP PRIMER & PAINT DETERIORATED. NRC495
- [SDR 2022F00077](https://openairdocs.org/sdr/2022F00077), Feb 9, 2022: LENS. CRACKED. FWD GALLEY SERVICE DOOR AREA EMERGENCY EXIT PLASTIC SIGN B08 BROKEN AT BOTH FWD/AFT UPPER CORNERS
- [SDR 2022F00078](https://openairdocs.org/sdr/2022F00078), Feb 9, 2022: LENS. CRACKED. FWD ENTRY DOOR AREA PLASTIC EXIT EMERGENCY EXIT SIGN BROKEN AT LOWER FWD CORNER.
- [SDR NACA2020010824177](https://openairdocs.org/sdr/NACA2020010824177), Dec 24, 2019: STRINGER CLIP. CRACKED. BS727A, S20L CRACKED STRINGER CLIP. REPLACED CRACKED STRINGER CLIP AT STA 727A, STR 20L WITH NEW PART, PN 69-35352-2 IAW B737-400 SRM 51-40-02, REV 104 AND BOEI
- [SDR NACA2020010800176](https://openairdocs.org/sdr/NACA2020010800176), Dec 24, 2019: FRAME. CRACKED. BS500F, S20L - S21L, 1.04" WIRING PENETRATION HOLE CRACKED IN FRAME WEB. REPAIR IAW SB 737-53A1279 B737-400, 53-00-07 REPAIR 20
- [SDR NACA2019122400175](https://openairdocs.org/sdr/NACA2019122400175), Dec 24, 2019: FRAME. CRACKED. BS500B, S21R - S22R TOOLING HOLE CRACKED IN FRAME. CONTACT BOEING ENGINEERING, SDR STILL OPEN
- [SDR NACA2019122400174](https://openairdocs.org/sdr/NACA2019122400174), Dec 24, 2019: SKIN. CRACKED. BS340, WL208 3 CRACKS FOUND AT L1 DOOR AFT LOWER CORNER ON FUSELAGE SKIN. CONTACT PEMCO ENGINEERING, SDR STILL OPEN
- [SDR NACA2020010800173](https://openairdocs.org/sdr/NACA2020010800173), Dec 24, 2019: BULKHEAD. CRACKED. CRACK FOUND ON BS178 BULKHEAD WEB AT LBL5.7 BETWEEN WL207 AND WL195. REPAIR PER SRM 53-10-08 REPAIR 10
- [SDR NACA2020010800172](https://openairdocs.org/sdr/NACA2020010800172), Dec 24, 2019: PROBE. CORRODED. RIGHT HAND ELEVATOR FEEL PITOT PROBE DAMAGED/CORRODED. REPLACED L/H ELEVATOR FEEL PITOT PROBE PN: 0851CM-2 SN: 167646 WITH NEW PITOT PROBE PN: 0851CM-2 SN: 1665
- [SDR NACA2020010800171](https://openairdocs.org/sdr/NACA2020010800171), Dec 24, 2019: PROBE. CORRODED. LEFT HAND ELEVATOR FEEL PITOT PROBE DAMAGED/CORRODED. REPLACED L/H ELEVATOR FEEL PITOT PROBE PN: 0851CM-2 SN: 167646 WITH NEW PITOT PROBE PN: 0851CM-2 SN: 16655
- [SDR NACA2020010800170](https://openairdocs.org/sdr/NACA2020010800170), Dec 24, 2019: FLOORBEAM. CRACKED. BS660 - BS666, FLOOR BEAM LOWER CHORD, LBL24.82 CRACK INDICATION IN FORWARD HOLE. RBL24.82 CRACK INDICATIONS IN FORWARD AND AFT HOLES. UPSIZE TO REMOVE CRACK IA
- [SDR NACA2020010800169](https://openairdocs.org/sdr/NACA2020010800169), Dec 24, 2019: INTERCOSTAL. CRACKED. BS279, S14R, CRACK FOUND ON FORWARD RADIUS TRIM OUT OF INTERCOSTAL (NDT HAS VERIFIED). REPLACED INTERCOSTAL AT STA 279 STR 14R WITH NEW PART IAW B737-400 SRM 51
- [SDR NACA2020010800168](https://openairdocs.org/sdr/NACA2020010800168), Dec 24, 2019: BRACKET. CRACKED. BS332.1, S8R, INTERCOSTAL T-BRACKET FOR DOOR STOP #1 CRACKED IN LOWER RADIUS. (VERIFIED BY NDT). AFT SIDE OF R1 DOOR. REPLACED STA 332.1 STR 8R, INTERCOSTAL T-B
- [SDR NACA2020010800167](https://openairdocs.org/sdr/NACA2020010800167), Dec 24, 2019: SKIN. CRACKED. RIGHT HAND LOWER HORIZONTAL STABILIZER SKIN, HSS142, ZONE "C" FORWARD OF REAR SPAR, SKIN CRACKED. REPAIRED R/H LOWER H-STAB SKIN. SSTA 147.9 ZONE "C" FWD OF REA
- [SDR NACA2020010800166](https://openairdocs.org/sdr/NACA2020010800166), Dec 24, 2019: SKIN. CORRODED. LEFT HAND HORIZONTAL STABILIZER UPPER SKIN BLISTERED @ AFT SPAR @ ES149. REPAIRED LH H-STAB UPR SKIN @ AFT SPAR @ ELEV STA 149 IAW SR# 4-4652338756, WITHOUT DEV
- [SDR NACA2019122400165](https://openairdocs.org/sdr/NACA2019122400165), Dec 24, 2019: SUPPORT FITTING. CRACKED. LEFT HAND MAIN LANDING GEAR SUPPORT FITTING, #5 HOLE IS CRACKED IN 2 PLACES. DETERMINE WHICH LAYER CRACK IS IN. SDR STILL OPEN FOR FINAL FIX.
- [SDR NACA2019122400164](https://openairdocs.org/sdr/NACA2019122400164), Dec 24, 2019: SUPPORT FITTING. CRACKED. RIGHT HAND MAIN LANDING GEAR BEAM FORWARD SUPPORT FITTING 2 CRACKS FOUND, MOST INBOARD UPPER 2 HOLES (MARKED ON AIRCRAFT). REPAIRED 2 CRACKS FOUND DURING RH MLG
- [SDR NACA2020010800163](https://openairdocs.org/sdr/NACA2020010800163), Dec 24, 2019: SPAR. CORRODED. FRONT SPAR LEFT HAND UPPER WING SURFACE WS246 CORROSION. L/H UPPER WING SURFACE W.S. 246, FRONT SPAR, REPAIRED IAW BOEING SERVICE REQUEST 4-4649225247, SEE 8100
- [SDR NACA2019122400162](https://openairdocs.org/sdr/NACA2019122400162), Dec 24, 2019: STRUCTURE. CRACKED. POSSIBLE CRACK BS290 S11R - S12R, RIGHT HAND ON OUTER CHORD. REPLACED CRACKED OUTER CHORD AT STA 290 STR 11-12 RH WITH PART NUMBER 65-45807-31 IAW BOEING DWG #6
- [SDR NACA2019122400161](https://openairdocs.org/sdr/NACA2019122400161), Dec 24, 2019: INTERCOSTAL. CRACKED. BS867 - BS887 RBL22.5 INTERCOSTAL CRACKED. REPLACED CRACKED INTERCOSTAL AT STA 867-887 RBL 22.5 IAW B737-400 SRM 51-40-02 REV 103. PN INFO NEEDED, STILL OPEN
- [SDR NACA2019122400160](https://openairdocs.org/sdr/NACA2019122400160), Dec 24, 2019: STRUCTURE. CRACKED. BS727 S18A RIGHT HAND CRACK CONFIRMED IN CHORD. REMOVE AND REPLACE IAW BOEING SB737-53-1088 REV 1 AND BOEING DWG 65C33722. REMOVED AND REPLACED CHORD AT STA 727
- [SDR NACA2020010800159](https://openairdocs.org/sdr/NACA2020010800159), Dec 24, 2019: STRUCTURE. CRACKED. BS727 S18A LEFT HAND CRACK CONFIRMED IN CHORD. REMOVE AND REPLACE IAW BOEING SB737-53-1088 REV 1 AND BOEING DWG 65C33722. REMOVED AND REPLACED CHORD AT STA 727,
- [SDR NACA2019122400158](https://openairdocs.org/sdr/NACA2019122400158), Dec 24, 2019: STOP FITTING. CRACKED. AD2018-18-03 REVEALED CRACKED #5 DOOR STOP FITTING ON FORWARD AIRSTAIR DOOR. RE&RE DOOR, REPLACE STOP FITTING, RIG DOOR & STOPS IAW SB737-53A1370 APPENDIX A. DA
- [SDR NACA2019122400157](https://openairdocs.org/sdr/NACA2019122400157), Dec 24, 2019: FITTING. CRACKED. LEFT HAND ENGINE REAR ENGINE MOUNT HANGAR FITTING HAS PITTING CORROSION IN CONE BOLT MATING SURFACE. REPLACED #1 ENGINE REAR MOUNT HANGAR FITTING IAW B737-400 A
- [SDR NACA2019123024156](https://openairdocs.org/sdr/NACA2019123024156), Dec 24, 2019: SUPPORT. CORRODED. BS 867 - 930, RBL21 SUPPORT ZEE WAS CORRODED AT VARIOUS PLACES, UPPER AND LOWER SIDE IN THE AFT CARGO BAY. BLENDED CORROSION IAW SRM 51-10-02 PAR.14, REV 103. N
- [SDR NACA2019123024155](https://openairdocs.org/sdr/NACA2019123024155), Dec 24, 2019: CHANNEL. CORRODED. BS 927 - 947, RBL 13.8 IN THE AFT CARGO BAY, THE FLOOR CHANNEL WAS CORRODED AT VARIOUS PLACES. REPLACED THE CHANNEL IAW SRM REV 103, 51-10-02, PARA 8 AND 65-465
- [SDR NACA2019123024154](https://openairdocs.org/sdr/NACA2019123024154), Dec 24, 2019: CHANNEL. CORRODED. BS 727A + 5.0 RBL3.0 AFT CARGO FLOOR CHANNEL CORRODED. REPAIRED THE CHANNEL IAW SRM 53-00-53, REV 103.
- [SDR NACA2019123024153](https://openairdocs.org/sdr/NACA2019123024153), Dec 24, 2019: CHANNEL. CORRODED. BS 727F + 5, RBL 8.1, AFT CARGO FLOOR CHANNEL CORRODED. THE CHANNEL WAS BLENDED IAW SRM 51-10-02, PARAGRAPH 14, REV 103. ORIGINAL MATERIAL THICKNESS 0.080" IAW 
- [SDR NACA2109123024152](https://openairdocs.org/sdr/NACA2109123024152), Dec 24, 2019: BOLT. CORRODED. LEFT WING OUTBOARD FLAP OUTBOARD GIMBAL BUSHING RETENTION BOLT CORRODED. REPLACED THE LEFT WING OUTBD FLAP OUTBAORD GIMBAL BUSHING AND RETENTION BOLT IAW AMM 27
- [SDR NACA2019123024151](https://openairdocs.org/sdr/NACA2019123024151), Dec 24, 2019: BUSHING. WORN. LEFT WING OUTBOARD FLAP, OUTBOARD FOREFLAP SEQUENCE CARRIAGE HARDWARE WAS CORRODED AND BUSHINGS WORN. THE HARDWARE & BUSHINGS WERE REPLACED IAW AMM 27- 51-37 C 
- [SDR NACA2019123040150](https://openairdocs.org/sdr/NACA2019123040150), Dec 24, 2019: ACCESS PANEL. CORRODED. RIGHT HORIZONTAL STABILIZER LOWER SURFACE ACCESS PANEL 9222R AT HSS 56.01 WAS CORRODED UNDER AND AROUND ANCHOR NUTS. REPLACED THE ACCESS PANEL IAW SRM 51-30-01,
- [SDR NACA2019123040149](https://openairdocs.org/sdr/NACA2019123040149), Dec 24, 2019: PANEL. CORRODED. LEFT VERTICAL STABILIZER PANEL 9566L CORRODED ON LOWER SURFACE. REPLACED THE PANEL IAW SRM 51-30-01 REV 104, AND SRM 51-40-02 REV 104.
- [SDR NACA2019123040148](https://openairdocs.org/sdr/NACA2019123040148), Dec 24, 2019: STRAP. CORRODED. RIGHT HORIZONTAL STABILIZER PANEL 9223R MACHINED STRAP WAS CORRODED ON BOTTOM OF PANEL. REPLACED THE STRAP IAW DWG 65-53746, REV N, AND SRM 51-40-02, REV 104.
- [SDR NACA2019122400147](https://openairdocs.org/sdr/NACA2019122400147), Dec 24, 2019: SKIN. CORRODED. WS150 STRINGER 13 LEFT HAND WING UPPER SURFACE HAS SURFACE CORROSION. L/H UPPER WING SURFACE REPAIRED @ WS 150-112, STR 13U-15U IAW BOEING SERVICE REQUEST 4-464
- [SDR NACA2019123040146](https://openairdocs.org/sdr/NACA2019123040146), Dec 24, 2019: SKIN. CORRODED. WS271, STRINGER 13 LEFT HAND WING UPPER SURFACE HAS SURFACE CORROSION. LEFT HAND WING UPPER SURFACE, WS 232 STR 13, REPAIRED IAW BOEING SERVICE REQUEST 4-464922
- [SDR NACA2019123040145](https://openairdocs.org/sdr/NACA2019123040145), Dec 24, 2019: DOOR. CORRODED. AFT PORTABLE WATER DOOR SHOWS EVIDENCE OF CORROSION. REPLACED AFT TOILET SERVICE DOOR WITH NEW IAW AMM 52-49-07, REV 90. BONDING CHECK SERVICEABLE.
- [SDR NACA201903270031](https://openairdocs.org/sdr/NACA201903270031), Mar 25, 2019: WARNING SYSTEM. FALSE ACTIVATION. FIRE WARNING, MASTER CAUTION LIGHT & BELL ACTIVATED FOR APPROXIMATELY 1 SECOND THEN SELF CLEARED. FIRE WARN/MASTER CAUTION LIGHT & BELL ACTIVATED UNTIL CANCELLE

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