# Accident 20180310001859A: Learjet Inc 31A, Mt. Pleasant, MI, March 10, 2018

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: March 10, 2018, 17:30 local time
- Place: Mt. Pleasant, MI
- Airport: Mt. Pleasant Municipal
- Damage: Substantial damage
- Phase of flight: Landing: Rollout
- Operating rules: General operating rules (Part 91)
- Location: 43.6217° N, 84.7372° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=43.6217&lon=-84.7372&mi=10
- Aircraft: N500MP, registered now (https://openairdocs.org/aircraft/N500MP) (OpenAirDocs)
- Registry model: Learjet 31A (registry code 5170531, https://openairdocs.org/model/learjet-31a) (OpenAirDocs)
- Registry engine: Alliedsign TFE-731-2B (registry code 02502, https://openairdocs.org/engine/alliedsign-tfe-731-2b) (OpenAirDocs)
- Reported make and model: LEARJET INC 31A
- Reported engine: ALLIEDSIGN TFE 731-2B
- People aboard: 7
- Fatal injuries: 0
- Other injuries: 0
- NTSB investigation: [NTSB GAA18CA155](https://openairdocs.org/ntsb/GAA18CA155) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20180310001859A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON MARCH 10, 2018 AT 1730 EASTERN TIME, A LEAR 31 AIRCRAFT, N500MP, REGISTERED TO A CORPORATION AND OPERATED BY AN AIRLINE TRANSPORT PILOT, RECEIVED SUBSTANTIAL DAMAGE WHEN IT STRUCK 2 DEER DURING LANDING ROLLOUT ON RUNWAY 27 MOUNT PLEASANT MUNICIPAL AIRPORT (KMOP), MOUNT PLEASANT, MICHIGAN. DAYLIGHT VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE ACCIDENT. THE PERSONAL FLIGHT WAS BEING CONDUCTED UNDER THE PROVISIONS OF TITLE 14 CODE OF FEDERAL REGULATIONS (CFR) PART 91 UNDER AN INSTRUMENT FLIGHT RULES FLIGHT PLAN. THE TWO CREW MEMBERS AND FIVE PASSENGERS WERE UNINJURED. THE FLIGHT ORIGINATED FROM THE ULYSSES AIRPORT (KULS), ULYSSES, KANSAS.

ACCORDING TO THE PILOT DURING LANDING ROLLOUT WITH FULL FLAPS AND SPOILERS DEPLOYED, THEY VIEWED FOR A SPLIT SECOND, A DEER MOVING FROM THEIR LEFT SIDE TO THE RIGHT JUST PRIOR TO IMPACT. THE PILOT ESTIMATED AIRCRAFT SPEED TO HAVE BEEN 80 KNOTS AT THE TIME THEY HEARD A THUMP. THE CREW STATED AT NO TIME DID THEY LOSE DIRECTIONAL CONTROL OF THE AIRCRAFT AND THE LANDING ROLL WAS COMPLETED SAFELY. THEY TAXIED TO THE PARKING RAMP AND SHUT-DOWN NORMALLY. ONCE THE CREW INSPECTED THE AIRCRAFT IT WAS DISCOVERED THAT TWO DEER HAD BEEN STRUCK. THE LEFT WING LEADING EDGE NEAR THE STALL FENCE WAS CRUMPLED REARWARD APPROXIMATELY 6 INCHES AND THE UNDERSIDE OF THE LEFT FLAP HAD BEEN DENTED IN A NUMBER OF PLACES. THE SECOND DEER WAS STRUCK BY THE NOSE WHEEL THEN ROLLED-UP UNDER THE RIGHT WING IMPACTING THE WING FLAP CAUSING THE TOP FLAP SKIN TO BUCKLE NEAR THE TRAILING EDGE. INVESTIGATION REVEALED NO SIGNS OF DEBRIS INGESTION TO EITHER ENGINE. THE CREW NOTIFIED SAGINAW AIR TRAFFIC CONTROL AND AIRPORT MANAGEMENT OF THE ACCIDENT THEN ASSISTED IN REMOVAL OF DEBRIS FROM THE RUNWAY.

WEATHER REPORT AT KMOP AIRPORT AT 2335Z: WINDS CALM, VISIBILITY 10 STATUTE MILES, SCATTERED CLOUDS, TEMPERATURE 4C. AND ALTIMETER 30.09.

## 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 GAA18CA155](https://openairdocs.org/ntsb/GAA18CA155), Mar 10, 2018: Learjet 31 (N500MP), Mount Pleasant, MI, substantial damage. Probable cause: The airplane’s collision with deer during the landing roll.

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.

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