# Accident 20210910012829A: Cessna 172S, Lasalle, CO, September 10, 2021 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: September 10, 2021, 11:00 local time - Place: Lasalle, CO - Damage: Substantial damage - Phase of flight: Maneuver - Operating rules: Pilot school (Part 141) - Operator: Y61S - Location: 40.3533° N, 104.6919° W: From the FAA - Nearby events: https://openairdocs.org/map.md?lat=40.3533&lon=-104.6919&mi=10 - Aircraft: N2099J, a cancelled registration (https://openairdocs.org/deregistered/N2099J-2023-02-04) (OpenAirDocs) - Registry model: Cessna 172S (registry code 2072439, https://openairdocs.org/model/cessna-172s) (OpenAirDocs) - Registry engine: Lycoming IO-360-L2A (registry code 41597, https://openairdocs.org/engine/lycoming-io-360-l2a) (OpenAirDocs) - Reported make and model: CESSNA 172S - Reported engine: LYCOMING IO-360-L2A - People aboard: 2 - Fatal injuries: 0 - Other injuries: 2 - Pilot certificates: Commercial pilot, flight instructor, private pilot, student - Pilot flight hours: 938 total, 893 in this make and model, 106 in the last 90 days - NTSB investigation: [NTSB CEN21LA414](https://openairdocs.org/ntsb/CEN21LA414) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20210910012829A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. THE FLIGHT INSTRUCTOR (CFI) AND STUDENT PILOT (SP) DEPARTED ROCKY MOUNTAIN METRO (BJC) AT APPROXIMATELY 10:20 A.M. ON A PRE-SOLO CROSS-COUNTRY PROGRESS CHECK FLIGHT DESTINED FOR KIMBALL MUNI (IMB). THE FLIGHT INCLUDED SEVERAL SIMULATED IN-FLIGHT PROBLEM/EMERGENCY SCENARIOS. AFTER COMPLETING SEVERAL SCENARIOS AND AFTER APPROXIMATELY 40 MINUTES OF FLIGHT, THE CFI INSTRUCTED THE SP TO PERFORM A TOUCH AND GO LANDING AT GREELEY AIRPORT (GXY) AND THEN NAVIGATE BACK TO BJC. AFTER THE TOUCH AND GO AND AT APPROXIMATELY 7500?, THE CFI INITIATED SIMULATED HIGH OIL PRESSURE AND HIGH OIL TEMP SCENARIOS UPON WHICH THE SP DECIDED TO RETURN TO GXY. THE CFI THEN ISSUED A PARTIAL POWER LOSS AND REDUCED RPM TO 2000. THE SP PITCHED FOR 68 KTS AIRSPEED AND WAS INFORMED BY THE CFI THAT THE SCENARIO HAD PROGRESSED TO A SIMULATED ENGINE FIRE. THE STUDENT REDUCED THE THROTTLE TO IDLE AND BEGAN A DIVE. WHEN THE CFI ANNOUNCED THAT THE SIMULATED FIRE WAS OUT, THE SP RE-ESTABLISHED A 68KT GLIDE AND TURNED FOR A SIMULATED OFF-FIELD LANDING LOCATION NEAR LASALLE CO. AT APPROXIMATELY 1000? AGL, WHEN IT WAS DETERMINED THAT THE STUDENT WOULD SAFELY REACH HIS SELECTED EMERGENCY OFF-FIELD LOCATION, HE WAS INSTRUCTED TO COMMENCE A GO-AROUND AND FLY A COURSE BACK TO BJC. WHEN THE SP ATTEMPTED TO REAPPLY POWER AS INSTRUCTED, THE ENGINE FAILED TO RESPOND. SP ATTEMPTED TO APPLY POWER A SECOND TIME WITH THE SAME RESULTS. THE SP INFORMED THE CFI OF THE SITUATION AND THE CFI IMMEDIATELY TOOK CONTROL OF THE AIRPLANE. THE SP ATTEMPTED ANOTHER ENGINE RESTART WITH THE THROTTLE AND MIXTURE FULLY ADVANCED. THE ENGINE PROPELLER TURNED BUT THE ENGINE FAILED TO START. THE SP TUNED THE VHF TO 121.5 AND THE CFI DECLARED AN EMERGENCY WHILE PERFORMING A 180-DEGREE POWER-OFF TURN TO A DIFFERENT LANDING SPOT THAN WHAT THE SP HAD SELECTED EARLIER. UPON LANDING THE AIRCRAFT STRUCK A RAISED EMBANKMENT ALONG A DIRT ROAD AND FLIPPED OVER ONTO ITS BACK INTO AN ADJACENT CORNFIELD. PHOTOS OF THE CRASH SCENE INDICATE THAT DIRECTION OF LANDING WAS APPROXIMATELY 70 DEGREES; THE HEADING OF THE DIRT ROAD IS APPROXIMATELY 115 DEGREES. BOTH OCCUPANTS WERE TRANSPORTED TO A HOSPITAL WITH MINOR INJURIES. A WITNESS SAID HE WATCHED THE AIRCRAFT FLYING LOW OVERHEAD JUST BEFORE CRASHING AND NOTICED THAT THE PROPELLER WAS NOT TURNING. CRASH SITE IS NEAR INTERSECTION OF WELD COUNTY ROAD 50.5 & WELD COUNTY ROAD 41. AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE TO BOTH WINGS, ENGINE/MOUNT AND COWLING, FUSELAGE, NOSE GEAR AND LEFT MAIN GEAR. WEATHER DATA AVAILABLE AT THE TIME OF THE ACCIDENT REPORT WAS 202109101656 METAR KGXY 101656Z AUTO VRB04KT 10SM CLR 28/06 A3015 RMK AO2 SLP172 T02780061. ## The NTSB's investigation of this event (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB CEN21LA414](https://openairdocs.org/ntsb/CEN21LA414), Sep 10, 2021: Cessna 172S (N2099J), LaSalle, CO, substantial damage. Probable cause: A loss of engine power for undetermined reasons. ## Other reports on N2099J (2) Matched to the same aircraft by N-number and date. - [Incident 20150316002489I](https://openairdocs.org/incident/20150316002489I), Mar 16, 2015: Cessna 172S (N2099J), Broomfield, CO, Minor damage. Cessna 172S registration N2099J began take off roll on runway 29L and departed runway striking a runway landing light before coming to a rest. - [Accident 20040829022299A](https://openairdocs.org/incident/20040829022299A), Aug 29, 2004: Cessna 172S (N2099J), Erie, CO, Substantial damage. (-23) At approximately 16:00 gmt, at the Erie municipal airport, Erie, Colorado, the aircraft listed above was substantially damaged when the pilot made a hard… 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. For accidents, the NTSB's own investigation is the fuller record. --- 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.