# Boeing 737-4C9 - Type: Aircraft model (FAA registry) - Registry code: 138449O - Manufacturer (registry): BOEING - Model: 737-4C9 - Aircraft type: Fixed wing multi engine - Category: Airplane - Engines: 2 ยท Turbo-fan - Seats: 190 - Weight class: 20,000 lb and over - Certification: Type certificated - Registered aircraft: 1 - Page: https://openairdocs.org/model/boeing-737-4c9 Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. None matched. ## Registered aircraft (1) - [N730CK](https://openairdocs.org/aircraft/N730CK): [Kalitta Charters II LLC](https://openairdocs.org/faa-owner/KALITTA%20CHARTERS%20II%20LLC), [Ypsilanti, MI](https://openairdocs.org/faa-place/MI/Ypsilanti), built 1992, S/N 26437 ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (23) As reported by operators and repair stations, by the model named in the report. - [SDR K11A2026102200405](https://openairdocs.org/sdr/K11A2026102200405), Oct 22, 2026: WARNING MESSAGE. MULTIPLE FAIL. DURING TAKEOFF ROLL MASTER CAUTION, FLT CONT AND HYD ANNUNCIATOR LIGHTS ILLUMINATED, FLT CONTROL LOW PRESSURE A LIGHT ILLUMINATED, DURING TAKE OFF ROLL STBY RUD - [SDR K11A2026100600394](https://openairdocs.org/sdr/K11A2026100600394), Oct 6, 2026: ACTUATOR. FAILED. RED LEFT GEAR LIGHT STAYED ON WITH GEAR LEVER IN THE UP POSITION IN FLIGHT, RED AND GREEN LIGHT BOTH ON WITH GEAR LEVER IN THE OFF POSITION IN FLIGHT. LEFT GEAR - [SDR K11A2026092900393](https://openairdocs.org/sdr/K11A2026092900393), Sep 29, 2026: MODULE. INTERMITTENT. RED LEFT GEAR LIGHT ON WITH GEAR LEVER UP IN FLIGHT. RED AND GREEN LEFT GEAR LIGHT ON WITH GEAR LEVER IN OFF POSITION. LEFT YOKE DEFLECTION IN FLIGHT WITH AIRFR - [SDR K11A2026042700379](https://openairdocs.org/sdr/K11A2026042700379), Apr 27, 2026: INDICATOR. FAILED. AIRSPEED UNRELIABLE FO SIDE AND STICK SHAKER ACTIVATION AFTER TAKEOFF LP 737-004-1488. REF LP 737-004-1489 REJECTED T/O SPEED 70 KNOTS, AIRSPEED UNRELIABLE ON F - [SDR K11A2026040400376](https://openairdocs.org/sdr/K11A2026040400376), Apr 4, 2026: CONTROLLER. FAILED. AT FL 310 CABIN ALTITUDE WARNING LIGHT ILLUMINATED AND HORN SOUNDED, FOLLOWED QUICK ACTIONS ITEMS DECLARED EMERGENCY, IMITATED DESCENT, CABIN PRESSURE WAS CONTR - [SDR K11A2025050800318](https://openairdocs.org/sdr/K11A2025050800318), May 8, 2025: BATTERY. INOPERATIVE. 2 EACH FLASHLIGHT BATTERIES REQUIRE REPLACED - NO FLASHING RED LIGHT BELOW COURIER SEAT BY L-1 DOOR. REMOVED AND REPLACED EMERGENCY FLASHLIGHT BATTERY AT BELOW - [SDR K11A2025050800317](https://openairdocs.org/sdr/K11A2025050800317), May 8, 2025: BATTERY. INOPERATIVE. EMERGENCY FLASHLIGHT AT CAPT'S POSITION RED BATTERY CHARGE INDICATION LIGHT NOT BLINKING BATTERIES REQUIRES REPLACED. REMOVED AND REPLACED EMERGENCY FLASHLIGHT - [SDR K11A2024012300250](https://openairdocs.org/sdr/K11A2024012300250), Jan 23, 2024: UNKNOWN. SMOKE. COURIER (LAV) AREA SMOKE IN FLIGHT - [SDR K11A2023080700225](https://openairdocs.org/sdr/K11A2023080700225), May 18, 2023: SEAT TRACK. CORRODED. EVIDENCE OF CORROSION ON MAIN DECK SEAT TRACK AT APPROX LBL 24 STA 957 - 986.5. - [SDR K11A2023080700226](https://openairdocs.org/sdr/K11A2023080700226), May 17, 2023: SEAT TRACK. CORRODED. MAIN DECK SEAT TRACK HAS EVIDENCE OF CORROSION AT APPROX STA 925.5 LBL 50.5. - [SDR K11A2023071000217](https://openairdocs.org/sdr/K11A2023071000217), May 17, 2023: UNKNOWN. CRACKED. APPROX. 6 INCH LONG CRACK FOUND ON L/H STAB LOWER SURFACE AT APPROX STAB STA 129 AS MARKED. - [SDR K11A2022123000177](https://openairdocs.org/sdr/K11A2022123000177), Dec 30, 2022: SHUTOFF VALVE. INOPERATIVE. BLEED TRIP OFF ILLUMINATED, WILL NOT RESET. AIRCRAFT UNABLE TO MAINTAIN REQUIRED ALTITUDE ON SINGLE OPERATING PACK. R & R NR 1 ENGINE PRSOV IAW AMM 36-11-15 LEA - [SDR K11A2021121800106](https://openairdocs.org/sdr/K11A2021121800106), Dec 18, 2021: NONE. NONE. PROBLEM DESCRIPTION: ON ROTATION A LOUD BANGING SOUNDS FROM THE #1 ENGINE, ERRATIC ENGINE INDICATION ON N1, TOWER REPORTED FLAMES OUT OF EXHAUST. CORRECTIVE ACT - [SDR K11A2021012200039](https://openairdocs.org/sdr/K11A2021012200039), Jan 22, 2021: BRACKET. CORRODED. LT WING OUTBOARD MIDFLAP BALLNUT SCREW ATTACHMENT BRACKET INBOARD HAS BOLT HOLE WITH CORROSION ON THE INNER DIAMETERS. - [SDR K11A2021011800038](https://openairdocs.org/sdr/K11A2021011800038), Jan 18, 2021: CARGO TRACK. CORRODED. TIE DOWN TRACK, AFT PIT AT STA 747 LBL 18 HAS CORROSION AT AFT OUTBOARD NUT PLATE. - [SDR K11A2021020300042](https://openairdocs.org/sdr/K11A2021020300042), Jan 10, 2021: ATTACH BRACKET. CORRODED. L/H WING O/B MIDFLAP BALLNUT SCREW ATTACHMENT BRACKET I/B LOWER BOLTHOLE HAS CORROSION ON INNER DIAMETER. - [SDR K11A2021020200040](https://openairdocs.org/sdr/K11A2021020200040), Jan 10, 2021: ATTACH BRACKET. CORRODED. L/H WING O/B MIDFLAP BALLNUT SCREW ATTACHMENT BRACKET O/B HAS BOLT HOLE WITH CORROSION ON THE O/B LOWER BOLT HOLE - [SDR K11A2021011800037](https://openairdocs.org/sdr/K11A2021011800037), Jan 5, 2021: ANGLE. CORRODED. BULK PIT, AFT BULKHEAD LOWER ANGLE HAS EVIDENCE OF CORROSION AFT SURFACE STA 907 LBL 16. - [SDR K11A2020082600009](https://openairdocs.org/sdr/K11A2020082600009), Aug 26, 2020: EEC. MALFUNCTIONED. #1 ENGINE EGT REACHED 925 DEG. STOPPED IT IN LESS THAN 1 SECOND ON TAKEOFF. PERFORMED VISUAL INSPECTION OF ENGINE NR 1 INLET AND EXHAUST, IAW B737 AMM 72-00-00, - [SDR K11A202006033001](https://openairdocs.org/sdr/K11A202006033001), Apr 28, 2020: WEB. CRACKED. FORWARD CARGO DOOR WEB CRACKED ON FWD BOTTOM SIDE STA 443 WL 167. - [SDR K11A2020012973001](https://openairdocs.org/sdr/K11A2020012973001), Jan 29, 2020: BATTERY. DISCHARGED. DURING TERMINATION OF SERVICE CHECK, FOUND THE R1 DOOR EMERGENCY EXIT LIGHT INOPERATIVE. REMOVED AND REPLACED THE R1 DOOR EMERGENCY EXIT LIGHT BATTERY, OPS CHEC - [SDR K11A2018102900002](https://openairdocs.org/sdr/K11A2018102900002), Oct 24, 2018: CONTROL PANEL. FAULTY. ON DEPATURE AIRCRAFT WOULD NOT PRESSURIZE, CABIN WOULD NOT HOLD PRESSURE IN AUTO OR MANUAL MODES, RETURNED TO KPHX FOR UNSCHEDULED LANDING. - [SDR K11A2018102900001](https://openairdocs.org/sdr/K11A2018102900001), Oct 24, 2018: CONTROLLER. INOPERATIVE. LOST CABIN PRESSURIZATION AT 16000 FT, RETURNED FOR UNSCHEDULED LANDING AT KRNO. --- 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.