# Mcdonnell 120 - Type: Aircraft model (FAA registry) - Registry code: 05642XC - Manufacturer (registry): MCDONNELL AIRCRAFT CORP - Model: 120 - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Reciprocating - Seats: 4 - Weight class: Up to 12,499 lb - Certification: Not type certificated - Registered aircraft: 0 - Page: https://openairdocs.org/model/mcdonnell-120 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 None registered with this model now. ## STCs approved for it (221, first 50) - [STC SA00024NY](https://openairdocs.org/stc/SA00024NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K007 on single or multi-engine fixed wing light aircraft incorporating Lycoming reciprocating engines of 450 horsepower or less.. Airwolf Filter Corporation - [STC SA00061LA](https://openairdocs.org/stc/SA00061LA): Installation of JPI digital tachometer.. J P Instruments - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc. - [STC SA00072NY](https://openairdocs.org/stc/SA00072NY): Installation of a Sensenich model 72CK fixed-pitch metal propeller.. AVPROP Ltd. - [STC SA00079NY](https://openairdocs.org/stc/SA00079NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K008 on single and multi engine fixed wing light aircraft incorporating Teledyne Continental reciprocating engines of 450 horsepower or less.. Airwolf Filter Corporation - [STC SA00081NY](https://openairdocs.org/stc/SA00081NY): Installation of Iceman Aviation Supplies, Inc. Carburetor Ice Detector.. Alcor LLC - [STC SA00188AT](https://openairdocs.org/stc/SA00188AT): Installation of Appalachian Accessories carbon steel brake discs that have the melonite surface treatment, P/N AA-26A.. Aviation Products, Inc - [STC SA00215NY](https://openairdocs.org/stc/SA00215NY): Installation of CAVU Model AM100 AVMIX engine fuel/air mixture setting system.. CAVU Products Limited - [STC SA00279LA](https://openairdocs.org/stc/SA00279LA): Installation of Ameri-King AK-950 Global Positioning System Navigation Switching/Annunciator Panel and Associated Equipment. Ameri-King Corporation - [STC SA00343BO](https://openairdocs.org/stc/SA00343BO): Installation of a single configuration or a dual configuration Avidyne Corporation Integrated Flight Display, Model IFD540 loaded with Release 10.0 software (or later FAA approved release). Avidyne Corporation - [STC SA00344BO PAGE 1](https://openairdocs.org/stc/SA00344BO%20PAGE%201): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.. Whelen Aerospace Technologies - [STC SA00352BO PAGE 1](https://openairdocs.org/stc/SA00352BO%20PAGE%201): Installation of an Avidyne Corporation Mode A/C/S Transponder with ADS-B Out capability, Model AXP340 loaded with Version 3.13 software (or later FAA approved version),. Avidyne Corporation - [STC SA00382BO](https://openairdocs.org/stc/SA00382BO): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes. Avidyne Corporation - [STC SA00401BO](https://openairdocs.org/stc/SA00401BO): Installation of a SkyTrax100B UAT receiver. Avidyne Corporation - [STC SA00402SE](https://openairdocs.org/stc/SA00402SE): Installation of a remote spin-on oil filter adapter. (GC-1B w/Lycoming or Cont 360 engine installed). Aviation Development Corporation - [STC SA00410BO](https://openairdocs.org/stc/SA00410BO): Installation of an AV-30-C Multi-Mode Indicator. uAvionix Corporation - [STC SA00432SE](https://openairdocs.org/stc/SA00432SE): Installation of EGT 701 series fuel flow instrument.. J P Instruments - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric.. Aviation Products Systems Inc. - [STC SA00680SE (4 OF 6](https://openairdocs.org/stc/SA00680SE%20(4%20OF%206): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer.. Electronics International - [STC SA00744DE](https://openairdocs.org/stc/SA00744DE): Installation of the Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT31 Transponder and an approved position sensor. Peregrine - [STC SA00756DE](https://openairdocs.org/stc/SA00756DE): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT22 Transponder and an approved Global Positioning System (GPS) Position Sensor. Peregrine - [STC SA00765DE](https://openairdocs.org/stc/SA00765DE): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensor. Peregrine - [STC SA00780SE](https://openairdocs.org/stc/SA00780SE): Installation of the True Lock Safety Retention Axle Lock Nut System. True Lock LLC - [STC SA00861SE](https://openairdocs.org/stc/SA00861SE): Installation of J.P. Instruments (JPI) fuel flow indicating system. J P Instruments - [STC SA00897WI](https://openairdocs.org/stc/SA00897WI): Installation of Concorde Battery Corporation (VRSLA) Valve regulated sealed lead acid battery.. Aero-Mach Wilco LLC - [STC SA01005DE](https://openairdocs.org/stc/SA01005DE): Installation of a EarthX ETX900-TSO Lithium battery. EarthX Inc. - [STC SA01015SE](https://openairdocs.org/stc/SA01015SE): Installation of eligible Alaska Bushwheel, Inc. wheels and TSO-C62d tires. ABI LLC - [STC SA01026SE](https://openairdocs.org/stc/SA01026SE): Improved fuel gascolator assembly.. Steve's Aircraft - [STC SA01077SE](https://openairdocs.org/stc/SA01077SE): Installation of fluoropolymer film.. Columbia Pacific Airlines - [STC SA01118WI](https://openairdocs.org/stc/SA01118WI): Installation of the Concorde FLA or VRSLA RG series batteries. Concorde Battery Corporation - [STC SA01139CH](https://openairdocs.org/stc/SA01139CH): Installation of W.D. Davis V.I.C.C.L. Cessna Cowl Latch.. Kenneth E. Morris and Lorraine R. Morris - [STC SA01229SE PAGE 1](https://openairdocs.org/stc/SA01229SE%20PAGE%201): Installation of GNS 480 (CNX80) GPS WAAS Navigator with integrated VHF Navigation and Communication radios. Garmin International Inc - [STC SA01233SE](https://openairdocs.org/stc/SA01233SE): Fabrication and installation of Alaskan Bushwheel LLC tail wheel and fork assembly. ABI, LLC - [STC SA01311AT](https://openairdocs.org/stc/SA01311AT): Installation of Teledyne Continental Motors models C-85-12, C-18-12F, and C-85-14F engines which have STC SE01309AT installed.. Lowe Aviation Aircraft Maintenance - [STC SA01447SE](https://openairdocs.org/stc/SA01447SE): Installation of vortex generators on the wings and horizontal tail surfaces of the above model aircraft in accordance with Drawing Package MA2201, Revision IR, dated July 28, 2004, and Installation Manual MA2202, Revision IR, dated August 16, 2004, or later FAA approved revision to either of these documents.. Micro AeroDynamics Inc - [STC SA01487SE (5 OF 5](https://openairdocs.org/stc/SA01487SE%20(5%20OF%205): Installation of a GDL 69 or GDL 69A XM Satellite Receiver in accordance with Garmin Supplemental Type Certificate Master Data List, P/N 005-C0217-00, Revision A, dated December 20, 2004, or later FAA approved revision.. Garmin AT Inc. - [STC SA01487SE-D](https://openairdocs.org/stc/SA01487SE-D): Installation of a GDL 69 or GDL 69A XM Satellite Receiver. Garmin International Inc - [STC SA01669CH](https://openairdocs.org/stc/SA01669CH): Installation of Challenger Reusable Air Filter. Challenger Aviation Products Inc. - [STC SA01695SE (1 OF 5)](https://openairdocs.org/stc/SA01695SE%20(1%20OF%205)): Installation of an antenna. Garmin AT Inc. - [STC SA01714WI (2 OF 2)](https://openairdocs.org/stc/SA01714WI%20(2%20OF%202)): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems.. Garmin International Inc - [STC SA01765SE](https://openairdocs.org/stc/SA01765SE): Installation of Alaskan Bushwheel TSO-C26d wheels, Part Number (P/N) ABI-1010. ABI, LLC - [STC SA01768SE](https://openairdocs.org/stc/SA01768SE): Installation of an oil cooler system.. Steve's Aircraft - [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control.. TCW Technologies, LLC - [STC SA01814CH](https://openairdocs.org/stc/SA01814CH): Replace Cessna S-43 fabric attachment clips with AD42ABSLF rivets in accordance with the Instructions and Procedures as listed on AML No. SA01814CH, or later FAA Approved revisions.. Kenneth E. Morris and Lorraine R. Morris - [STC SA01818WI](https://openairdocs.org/stc/SA01818WI): Installation of Garmin G5 Electronic Flight Instrument. Garmin International Inc. - [STC SA01835WI](https://openairdocs.org/stc/SA01835WI): Installation of Trig Avionics TY-96 or TY-97 VHF Communications Radio. Peregrine - [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC - [STC SA01899WI](https://openairdocs.org/stc/SA01899WI): Installation of Garmin G3X Touch Electronic Flight Instrument System. Garmin International Inc. - [STC SA01933LA-D (1 OF 2)](https://openairdocs.org/stc/SA01933LA-D%20(1%20OF%202)): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc - [STC SA01933LA-D PAGE 1](https://openairdocs.org/stc/SA01933LA-D%20PAGE%201): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc All 221: https://openairdocs.org/model/mcdonnell-120/stcs.md ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (108, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR DXTA2022092771200](https://openairdocs.org/sdr/DXTA2022092771200), Sep 27, 2022: BATTERY PACK. ABNORMAL. EMER LIGHTS OFF AMBER CAS: ON PREFLIGHT SEAT 3 FLOOR AND OVERHEAD EMERGENCY LIGHTS INOP WITH ON AND ARMED POSITION AS WELL AS RIGHT WING ICE LIGHT. LIGHTS ALL W - [SDR DXTA2022092771210](https://openairdocs.org/sdr/DXTA2022092771210), Sep 27, 2022: BATTERY PACK. DEFECTIVE. CABIN EMERG LIGHT: EMERGENCY LIGHTING OVERHEAD LIGHT SEAT 7 AND PATH LIGHTING UNDER SEAT 5 AND SEAT 8 ARE OUT. // SIGNOFF// TROUBLESHOT TO BAD BATTERY PACK#3 RE - [SDR DXTA2022092771120](https://openairdocs.org/sdr/DXTA2022092771120), Sep 26, 2022: NONE. DEFECTIVE. FLOOR EMERG EXIT LIGHT: LEFT FORWARD EMERGENCY PATH WAY LIGHTING IS INOP // SIGNOFF// REMOVED AND REPLACED THE LEFT FORWARD POSITION 1 AND LEFT FORWARD POSITION - [SDR DXTA2022092671140](https://openairdocs.org/sdr/DXTA2022092671140), Sep 26, 2022: NONE. NONE. EMERG LIGHT SWITCH: WITH BATTERIES CONNNECTED AND BATT SWITCHES OFF, EMER LIGHTS WERE NOT OPERATIONAL WITH THE EMER LTS SWITCH IN THE ARM POSITION. // SIGNOFF// - [SDR DXTA2022092671080](https://openairdocs.org/sdr/DXTA2022092671080), Sep 25, 2022: NONE. ABNORMAL. MAIN DOOR: SCREW CAME OFF OF MAIN DOOR CONTROL ARM. CONTROL ARM IS SEPARATED AND CANNOT LIFT DOOR.// SIGNOFF// REMOVED WORN FWD DOOR LIFT LINK ASSY PN: 7411323- - [SDR DXTA2022092370950](https://openairdocs.org/sdr/DXTA2022092370950), Sep 22, 2022: BATTERY PACK. ABNORMAL. EMERG EXIT SIGN/LIGHT: EMER LIGHTS WORKED ON INITIAL POWER UP PRE FLIGHT BUT ARE FAILING TO ILLUMINATE ON SHUT DOWN. // SIGNOFF// REMOVED AND REPLACED EMERGENCY - [SDR DXTA2022092370960](https://openairdocs.org/sdr/DXTA2022092370960), Sep 22, 2022: NONE. NONE. MAIN DOOR: CANNOT GET THE MAIN CABIN DOOR TO LATCH. DOOR COMES UP NORMALLY BUT THRE IS A PRONOUNCED CLUNK AS THE DOOR COMES SHUT AND THE LATCH WILL NOT LATCH. N - [SDR DXTA2022092270900](https://openairdocs.org/sdr/DXTA2022092270900), Sep 22, 2022: WIRE. SHORTED. CABIN DOOR OPEN AMBER CAS: WHEN CLOSING MAIN CANIN DOOR, YELLOW DOOR HANDLE LOCK LIGHT WOULD NOT EXTINGUISH. ALSO AMBER CAS CABIN DOOR OPEN WAS ILUMINATED. FOLL - [SDR DXTA2022092170810](https://openairdocs.org/sdr/DXTA2022092170810), Sep 20, 2022: NONE. NONE. CABIN EMERG LIGHT: EMERGENCY LIGHTS DO NOT COME ON WITH THE PAX SAFETY ON OR WITH THE EMERGENCY LIGHTS IN ARM POSITION WITH NO DC POWER APPLIED. WITH THE EMERGE - [SDR DXTA2022092070760](https://openairdocs.org/sdr/DXTA2022092070760), Sep 19, 2022: NONE. NONE. MAIN DOOR: UNABLE TO LOCK THE MAIN CABIN DOOR FROM THE INSIDE. WE WERE ABLE TO LOCK THE DOOR ONCE BUT HAD A VENT DOOR AND LOCKING HANDLE LIGHT INLLIMINATED ON T - [SDR DXTA2022092070800](https://openairdocs.org/sdr/DXTA2022092070800), Sep 19, 2022: NONE. NONE. EMERGENCY EXIT OPEN AMBER CAS: AMBER EMERGENCY EXIT OPEN CAS MESSAGE CAME ON APPROX ONE HOUR INTO FLIGHT AT FL410. EXTINGUISHED DURING DESCENT BELOW FL180 // SI - [SDR DXTA2022091970710](https://openairdocs.org/sdr/DXTA2022091970710), Sep 18, 2022: NONE. DEFECTIVE. MAIN DOOR LOCK: DURING THE ROTARY TEST OVERSPEED DETENT, THE DOOR LOCK SOLENOID DID NOT MAKE A CLICK. WE CLOSED THE MAIN CABIN DOOR AND TRIED THE OVERSPEED TEST - [SDR DXTA2022092070770](https://openairdocs.org/sdr/DXTA2022092070770), Sep 18, 2022: NONE. DEFECTIVE. FLOOR EMERG EXIT LIGHT: LEFT FOWARD EMER FLOOR PATHWAY LIGHTS ARE INOP. // SIGNOFF// REMOVED INOP LH MOST FWD LOWER LED LIGHTING STRIP P/N: 9919040-9, AND INSTA - [SDR DXTA2022091970730](https://openairdocs.org/sdr/DXTA2022091970730), Sep 18, 2022: NONE. NONE. MAIN EXIT SIGN/LIGHT: MAIN DOOR EXIT SIGN LIGHTS REMAIN ON REGARDLESS OF SWITCH POSITION. // SIGNOFF// FOUND #1 EMERGENCY LIGHTING INERTIA SWITCH TO BE TRIPPED. - [SDR DXTA2022091970640](https://openairdocs.org/sdr/DXTA2022091970640), Sep 17, 2022: PUMP. DAMAGED. IN FLIGHT, AMBER CAS HYD PRESSURE LOW RT. LATER AN AMBER CAS HYD VOLUME LOW. RAN QRH. HYD FLUID DRIPPING FROM RT ENG ON POST FLT. FOUND RT HYD LINE & CLAMPS SHE - [SDR DXTA2022091970670](https://openairdocs.org/sdr/DXTA2022091970670), Sep 17, 2022: NONE. NONE. CABIN EMERG LIGHT: WITH THE BATTERIES OFF AND THE EMER LIGHTS OFF THE EMERGENCY EXIT SIGN (WHITE) OVER THE MAIN CABIN DOOR IS ILLUMINATED. ALSO THE 2 EXIT SIGNS - [SDR DXTA2022091670530](https://openairdocs.org/sdr/DXTA2022091670530), Sep 16, 2022: NONE. NONE. MAIN EXIT SIGN/LIGHT: MAIN EXIT SIGN/LIGHT AND PATH LIGHT REMAIN ON AFTER POWERED OFF. // SIGNOFF // GAINED ACCESS TO #1 INERTIA SWITCH AND RESET SWITCH REF CE6 - [SDR DXTA2022091970570](https://openairdocs.org/sdr/DXTA2022091970570), Sep 16, 2022: NONE. NONE. MAIN DOOR: MAIN DOOR FREE FALLS OPEN WHEN UNLATCHED. BOTH DAMPENERS ON DOOR ARE WEAK AND MAY REQUIRE REPLACEMENT. //SIGNOFF// OPERATED DOOR MULTIPLE TIMES AND N - [SDR DXTA2022091970590](https://openairdocs.org/sdr/DXTA2022091970590), Sep 16, 2022: NONE. NONE. MAIN DOOR PRECATCH: WILL NOT RELEASE WHEN AIR ON. // SIGNOFF// CONDUCTED OPS CHECK ON MAIN DOOR IAW CE-560XL AMM 52-10-00. NO DISCREPANCIES FOUND. MCC APPROVED - [SDR DXTA2022091970560](https://openairdocs.org/sdr/DXTA2022091970560), Sep 16, 2022: DOOR SEAL. DEFECTIVE. EMERG EXIT DOOR SEAL: DURING FLIGHT AT 23,000FT PAX NOTIFIED US THAT THERE WAS A LOUD NOISE COMING FROM THE LAV. I WENT BACK TO LAV AND THERE WAS A LOUD HIGH PI - [SDR DXTA2022091570440](https://openairdocs.org/sdr/DXTA2022091570440), Sep 15, 2022: NONE. NONE. EMERG EXIT SIGN/LIGHT: WHEN THE EMERGENCY LIGHTS TOGGLE IS SWITCHED TO ON, ABOUT HALF OF THE EXIT LIGHTS ILLUMINATE. WHEN THE TOGGLE IS IN THE ARMED POSITION AN - [SDR DXTA2022091570400](https://openairdocs.org/sdr/DXTA2022091570400), Sep 14, 2022: NONE. NONE. MAIN DOOR HANDLE: WHEN CLOSING DOOR FROM INSIDE THE OUTSIDE HANDLE DOES NOT STOW - [SDR DXTA2022091470350](https://openairdocs.org/sdr/DXTA2022091470350), Sep 13, 2022: NONE. NONE. MAIN DOOR PRIMARY SEAL: RUBBING DAMAGE BY MAIN CABIN DOOR HANDLE OBSERVED ON AND AROUND PRIMARY AND ACOUSTIC DOOR SEAL AREA. - [SDR DXTA2022091370340](https://openairdocs.org/sdr/DXTA2022091370340), Sep 13, 2022: NONE. NONE. EMERGENCY LIGHTING: WHEN BATTERY SWITCHES ARE OFF AND EMER LIGHT SWITCH IS ON, THE GALLEY LIGHT, THE LIGHT BETWEEN SEATS 1 AND 3, LIGHT BETWEEN SESTS 5 AND 7, A - [SDR DXTA2022091370290](https://openairdocs.org/sdr/DXTA2022091370290), Sep 12, 2022: NONE. NONE. MAIN DOOR HANDLE: ADVISED UPON LANDING FROM GROUND PERSONNEL THAT MAIN CABIN DOOR HANDLE WAS "OUT AND AT AN ANGLE" WE CONFIRMED WITH CREWMEMBER OUTSIDE THAT HAN - [SDR DXTA2022091270130](https://openairdocs.org/sdr/DXTA2022091270130), Sep 10, 2022: NONE. DEFECTIVE. MAIN HYDRAULICS: DURING A CLIMB GOING THROUGH 11,500 FEET WE HAD A STAB-MIS-COMP ANNUNCIATOR LIGHT COME ON , AFTER ABOUT 30 SECONDS THE AUTO PILOT DISCONNECTED - [SDR DXTA2022091270160](https://openairdocs.org/sdr/DXTA2022091270160), Sep 10, 2022: NONE. DEFECTIVE. FORWARD EMERGENCY EXIT LIGHT ABOVE RIGHT WING IS MUCH DIMMER THAN THE OTHER EMERGENCY LIGHTS. // SIGNOFF// REMOVED AND REPLACED FOWARD EMER EXIT LIGHT ABOVE RIG - [SDR DXTA2022091270070](https://openairdocs.org/sdr/DXTA2022091270070), Sep 9, 2022: NONE. NONE. MAIN DOOR PRECATCH LEVER: MAIN CABIN DOOR PRECATCH WILL NOT RETRACT. MOVES WITH DOOR OPENING BUT SEEMS LIKE IT SKPPED A NOTCH ON THE GEAR. DOOR SECURES CORRECTL - [SDR DXTA2022091270080](https://openairdocs.org/sdr/DXTA2022091270080), Sep 9, 2022: NONE. NONE. RIGHT MLG BRAKE: RIGHT MAIN BRAKE IS VERY SOFT. HARD TO MAINTAIN DIRECTIONAL CONTROL ON LANDING. // SIGNOFF// BLED AIR FROM THE RH IB BRAKE. NO AIR FOUND IN RH - [SDR DXTA2022090970010](https://openairdocs.org/sdr/DXTA2022090970010), Sep 8, 2022: BATTERY PACK. DEFECTIVE. EMERGENCY LIGHTING: REPEAT WRITE UP. WITH THE EMERGENCY LIGHTS SWITCH IN THE OFF POSITION AND BOTH AIRCRAFT BATTERY SWITCHES OFF, THE FOLLOWIMG EMER LIGHTS ARE - [SDR DXTA2022090970000](https://openairdocs.org/sdr/DXTA2022090970000), Sep 8, 2022: NONE. DEFECTIVE. MAIN DOOR: RED PREASURE WARNING LIGHT ON MAIN CABIN DOOR WITH DOOR IN OPEN OR CLOSES POSITION. UNABLE TO CLEAR WITH POWER CYCLE. // SIGNOFF// REMOVED AND REPLAC - [SDR DXTA2022090970020](https://openairdocs.org/sdr/DXTA2022090970020), Sep 8, 2022: NONE. NONE. EMERG EXIT SIGN/LIGHT: ON POST FLIGHT THE EMER EXIT SIGN OVER THE MAIN CABIN DOOR AND THE FLOOR LIGHTING INDER SEAT 10 IS ILLUMINATED. // SIGNOFF// RESOLUTION: - [SDR DXTA2022090969990](https://openairdocs.org/sdr/DXTA2022090969990), Sep 8, 2022: NONE. NONE. MAIN DOOR: WITH BATTERIES CONNECTED, MAIN CABIN DOOR DOES NOT OPEN WHEN UNLATCHED. DOOR MUST BE MANUALLY MOVED TEN INCHES (TOP EDGE) BEFORE DOOR BEGINS TO OPEN. - [SDR DXTA2022090969970](https://openairdocs.org/sdr/DXTA2022090969970), Sep 8, 2022: NONE. DIRTY. COCKPIT ODOR: JUST AFTER LEVEL OFF AT FL 380 A FAINT BUT DISTINCT ODOR WAS NOTICED. IT WAS INTERMITTENT WHILE IN CRUISE BUT BECAME STRONGER DURING THE DESCENT. - [SDR DXTA2022090769850](https://openairdocs.org/sdr/DXTA2022090769850), Sep 7, 2022: NONE. NONE. MAIN DOOR: RECEIVED CABIN DOOR OPEN MESSAGE AFTER LANDING. RAN CHECKLIST MULTIPLE TIMES MESSAGE WOULD NOT CLEAR. AMBER LIGHT ON MAIN CABIN DOOR REMAINED ON . - [SDR DXTA2022090669820](https://openairdocs.org/sdr/DXTA2022090669820), Sep 6, 2022: NONE. NONE. EMERG EXIT SIGN/LIGHT: FORWARD - MAIN CABIN DOOR EXIT SIGN INOP. ALL OTHER LIGHTS ILLUMINATE WITH THE EMER LTS ARM SWITCH IN ON. - [SDR DXTA2022090669800](https://openairdocs.org/sdr/DXTA2022090669800), Sep 6, 2022: GALLEY. DEFECTIVE. CABIN EMERG LIGHT: EMER LIGHTS REMAIN ON WITH SWITCH IN ARMED POSITION//CORRECTIVE ACTION// REMOVED AND REPLACED CAPTAIN SIDE EMER BATTERY G-SWITCH. PERFORMED S - [SDR 2022F00345](https://openairdocs.org/sdr/2022F00345), Sep 6, 2022: NONE. NONE. TR FLANGE REPLACEMENT DRILL START. ACCOMPLISHED NORDAM FIELD ENGINEERING DISPOSITION NTRSD-22TP-238; TR FLANGE REPLACEMENT DRILL START REPAIR. - [SDR DXTA2022090769490](https://openairdocs.org/sdr/DXTA2022090769490), Sep 2, 2022: APU. DAMAGED. APU BLEED AIR: AFTER NORMAL STARTUP WHEN APU BLEED AIR SELECTED SMOKE FILLED THE CABIN AND COCKPIT (PER CREW, POST FLIGHT, NO PAX ON BOARD) // SIGNOFF// REPLACE - [SDR DXTA2022090669500](https://openairdocs.org/sdr/DXTA2022090669500), Sep 2, 2022: NONE. DEFECTIVE. COCKPIT ODOR: DURING EACH DESCENT WHEN THE THROTTLES/POWER WERE REDUCED THE CREW NOTICED A HOT OIL SMELL. THE SMELL WAS THE STRONGEST WHEN THE THROTTLES WERE AT - [SDR DXTA2022083169340](https://openairdocs.org/sdr/DXTA2022083169340), Aug 31, 2022: NONE. NONE. CABIN EMERG LIGHT: EMER LIGHTS DO NOT ILLUMINATE WHEN THE SWITCH IS PLACED IN ARM POSITION WITH THE BATTERY OFF - [SDR DXTA2022090169380](https://openairdocs.org/sdr/DXTA2022090169380), Aug 31, 2022: NONE. NONE. MAIN DOOR: MAIN ENTRANCE DOOR REQUIRES MORE FORCE THAN NORMAL TO OPEN AND CLOSE. REQUEST EVALUATION.// SIGNOFF// TESTED DOOR AND WAS ABLE TO REPRODUCE PILOT WRI - [SDR 2022FA0000486](https://openairdocs.org/sdr/2022FA0000486), Aug 31, 2022: NONE. FAILED. THE PILOT REPORTED DURING TAKEOFF FROM MEMPHIS INTERNATIONAL (MEM), AT ROTATION THE AIRCRAFT FELT LIKE A SIDE LOAD TO THE RIGHT WAS ENCOUNTERED POSSIBLY DUE TO - [SDR DXTA2022083169320](https://openairdocs.org/sdr/DXTA2022083169320), Aug 30, 2022: NONE. NONE. EMERG EXIT SIGN/LIGHT: EMERGENCY EXIT LIGHT ABOVE MAIN CABIN DOOR IS LATCHED ON. - [SDR DXTA2022083069280](https://openairdocs.org/sdr/DXTA2022083069280), Aug 30, 2022: NONE. NONE. LAV EXIT SIGN/LIGHT: LAV EXIT SIGN WILL NOT ILLUMINATE WITH MAIN SHIP BATTERIES OFF AND EMER LIGHT SWITCH IN ON OR ARM POSITION. WHEN MAIN SHIP BATTERIES ARE ON - [SDR DXTA2022083069250](https://openairdocs.org/sdr/DXTA2022083069250), Aug 29, 2022: NONE. NONE. CABIN EMERG LIGHT: ON POST FLIGHT DISCOVERED BATTERY 2 AND BATTERY PACK 4 INOP - [SDR DXTA2022082969200](https://openairdocs.org/sdr/DXTA2022082969200), Aug 28, 2022: NONE. NONE. EMERG EXIT SIGN/LIGHT: REMAINED ON AFTER BATTERY SWITCH OFF AND EMER LIGHT SWITCH IN OFF POSITION - [SDR DXTA2022082969090](https://openairdocs.org/sdr/DXTA2022082969090), Aug 27, 2022: NONE. NONE. EMERG EXIT SIGN/LIGHT: WITH THE EMERGENCY LIGHT SWITCH IN THE ARM POSITION, AND THE PASS SAFETY SWITCH OFF ALL THE EMER LIGHTS ARE ILLUMINATED. - [SDR DXTA2022082969060](https://openairdocs.org/sdr/DXTA2022082969060), Aug 27, 2022: NONE. NONE. EMERG EXIT SIGN/LIGHT: MAIN CABIN DOOR EXIT LIGHT WILL NOT GO OFF SUSPECT G SWITCH TRIPPED // SIGNOFF // RESET INERTIA SWITCH PER CE 680A AMM 33·50·00. EMERGENC - [SDR DXTA2022082968980](https://openairdocs.org/sdr/DXTA2022082968980), Aug 26, 2022: NONE. NONE. MAIN DOOR: MAIN CABIN DOOR VERY DIFFICULT TO LOCK/UNLOCK FROM INSIDE. All 108: https://openairdocs.org/model/mcdonnell-120/reports.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Cessna 120](https://openairdocs.org/model/cessna-120): 660 registered aircraft, registry code 2071402 - [Paraplane 120](https://openairdocs.org/model/paraplane-120): 0 registered aircraft, registry code 05636PA - [Cessna/Beck 120](https://openairdocs.org/model/cessna-beck-120): 0 registered aircraft, registry code 2071403 --- 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.