# NTSB DEN86LA161: Cessna 172P, N52985, Santa Fe, NM, June 15, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 15, 1986, 09:00 local (15:00 UTC)
- Place: Santa Fe, NM
- Location: 35.6171° N, 106.0894° W: Placed by OpenAirDocs at SANTA FE RGNL (SAF), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.6171&lon=-106.0894&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- Safety recommendations: Yes
- NTSB case key (mKey): 16981
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA161
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16981/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA161

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - mech failure/malf, takeoff - initial climb
  - engine assembly,valve,intake - jammed (cause)
  - engine assembly,push rod - bent (cause)
  - emergency procedure - performed, pilot in command
- Forced landing, descent - emergency
- Overrun, landing - roll
  - proper touchdown point - not attained, pilot in command (cause)
- Nose over, landing - roll
  - terrain condition - ditch

## Analysis

THE PLT STATED THAT SHORTLY AFTER TAKEOFF THE ENGINE BEGAN RUNNING ROUGH AND SHE WAS CLEARED BY THE TOWER TO LAND ON ANY RWY. THE PLT CHOSE RWY 10. SHE ADDED ONE NOTCH OF FLAPS OVER THE RWY THRESHOLD AND THE ACFT CONTINUED TO FLOAT, TOUCHING DOWN WITH 1/3 OF THE RWY REMAINING. BRAKES WERE APPLIED; HOWEVER, THE ACFT CONTINUED OFF THE RWY WHERE IT CONTACTED A DITCH AND NOSED OVER. POST ACCIDENT EXAM REVEALED THE #4 CYLINDER EXHAUST VALVE WAS STUCK.

## Aircraft

- Registration: [N52985](https://openairdocs.org/deregistered/N52985-1989-07-26), registration cancelled 1989-07-26, S/N 17274652 (OpenAirDocs)
- Reported make and model: CESSNA 172P
- Registry model: [Cessna 172P](https://openairdocs.org/model/cessna-172p) (registry code 2072436) (OpenAirDocs)
- Category: Airplane
- Serial number: 17274652
- Airframe hours: 1958
- Engines: LYCOMING O-320-D2J 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Deer Valley Aviation, doing business as Aero Mech Flying Club
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, May 29, 1986, 44 hours before
- Destination: SDL, SCOTTSVILLE, AZ
- Airport: SAF, Santa Fe, runway 10, 6,291 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 321 total, 38 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 10 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 28 °F
- Altimeter: 30.00 inHg
- Observed at: SAF

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19860615024279A](https://openairdocs.org/incident/19860615024279A), Jun 15, 1986: Cessna 172P, Santa Fe, NM, Substantial damage. Engine began running rough on takeoff. During landing, aircraft ran off the end of runway. Engine valve sticking.

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.

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