# NTSB DEN05LA063: Mooney M20F, Norwood, CO, March 20, 2005

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 20, 2005, 12:00 local (19:00 UTC)
- Place: Norwood, CO
- Coordinates: 38.151111, -108.271667
- Nearby events: https://openairdocs.org/map.md?lat=38.1511&lon=-108.2717&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 27, 2005
- Report: Approved by Office Director
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 61176
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN05LA063
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61176/pdf
- Page: https://openairdocs.org/ntsb/DEN05LA063

## Probable cause

the reported partial loss of engine power for undetermined reasons.  A contributing factor was the lack of suitable terrain for the forced landing.

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, descent
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- On ground/water encounter with terrain/water, emergency landing
  - terrain condition - none suitable (contributing factor)

## Analysis

While descending, the airplane's engine started "missing" and began to lose power.  Unable to maintain altitude, the pilot declared an emergency and executed a forced landing to a field.  During the landing, the nose landing gear collapsed and the outboard 4 feet of the left wing was bent upward.  Examination of the engine revealed no anomalies that would have precluded normal engine operation.  The reason for the reported partial loss of engine power was not determined.

## Factual narrative

On March 20, 2005, approximately 1200 mountain standard time, a Mooney M20F single-engine airplane, XB-FRU (Mexican Registration), operated by a private pilot, was substantially damaged during a forced landing following a partial loss of engine power while descending near Norwood, Colorado.  Visual meteorological conditions prevailed at the time of the accident.  The personal cross-country flight was being conducted under the provisions of Title 14 CFR Part 91 without a flight plan.  The pilot was not injured.  The flight originated at Lubbock, Texas, at 0810, and was destined for Telluride (TEX), Colorado.

According to the pilot, while en route he requested an update of the weather conditions at TEX.  Due to deteriorating weather conditions at TEX, the pilot requested an instrument rules flight (IFR) approach to TEX.  Denver Air Route Traffic Control Center was vectoring him from the "CONES" VOR (VHF Omnidirectional Radio Range) to Telluride.  The pilot stated that there was a snowstorm approaching from the northwest.

During the vectored approach and while maneuvering the airplane to stay "clear of clouds," the airplane's engine started "missing" and began to lose power.  The pilot noted no abnormal indications on the engine instruments.  Unable to maintain altitude, he declared an emergency, and executed a forced landing in a field.  During the landing, the airplane's nose landing gear collapsed, the right main landing gear separated, and the outboard 4 feet of the airplane's left wing was bent upward approximately 10 degrees.  After a visual examination, the pilot stated that he had approximately 2 hours of fuel remaining.

At 1229, the reported weather conditions at Telluride Regional Airport (TEX), Telluride, CO, located approximately 20 nautical miles at 110 degrees from the accident site, at an elevation of 9,078 feet msl, was, wind, 000 degrees at 0 knots; visibility, 1 1/4 statute miles; sky condition, scattered at 300 feet; broken at 700 feet; temperature, 1 degree C.; dew point, minus 4 degrees C.; altimeter setting, 29.78. The calculated density altitude was 9,681 feet msl.

On April 26, 2005, at the facilities of Beegles Aircraft, Greeley, Colorado, under the supervision of the NTSB investigator-in-charge, the engine and propeller was examined.  The engine remained attached to the airframe.  The engine crankshaft was rotated by hand via the propeller and continuity was established throughout the engine and accessories.  Thumb compression was noted on all cylinders.  The top spark plugs were removed and according to the Champion Spark Check-A-Plug chart AV-27, the spark plug electrodes displayed coloration consistent with normal operation.  When the engine crankshaft was rotated, the magnetos produced spark through the ignition harnesses to the sparkplugs.  No anomalies were noted with the engine.  The reason for the reported partial loss of engine power was not determined.

Examination of the propeller blades revealed the blades bent aft and displayed chordwise scratching and leading edge gouging.

## Aircraft

- Registration: XB-FRU (not matched to a registry record)
- Reported make and model: Mooney M20F
- Category: Airplane
- Serial number: 22-0050
- Engines: Lycoming IO-360-A1A 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Tomas Ortega
- Airworthiness certificate: Standard, Normal
- Departed: LBB, Lubbock, TX
- Destination: TEX, Telluride, CO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; injuries: none; private, foreign; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; last flight review December 1, 2004; seat: left; flight hours: 1,428 total, 1,200 in this make and model, 1,363 as pilot in command, 44 in the last 90 days, 32 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 0° at 0 knots
- Visibility: 1.25 statute miles
- Lowest ceiling: 700 ft broken
- Temperature: 34 °F, dew point 25 °F
- Altimeter: 29.78 inHg
- Observed at: KTEX, 20 nm away

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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