# NTSB DEN88IA204: Cessna 206, N71001, Glade Park, CO, September 15, 1988

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: September 15, 1988, 07:45 local (13:45 UTC)
- Place: Glade Park, CO
- Coordinates: 39.000858, -108.730926 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.0009&lon=-108.7309&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 11, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 17396
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN88IA204
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17396/pdf
- Page: https://openairdocs.org/ntsb/DEN88IA204

## Probable cause

THE FAILURE OF THE #1 CONNECTING ROD ASSEMBLY IN THE ENGINE, RESULTING IN A FORCED LANDING. A FACTOR IN THE INCIDENT WAS THAT THE PILOT DID NOT SEE & AVOID POWER WIRES IN THE FORCED LANDING PATH.

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - engine assembly,connecting rod - fatigue (cause)
  - engine assembly,connecting rod - failure,total
  - emergency procedure - performed, pilot in command (contributing factor)
- In flight collision with object, descent - emergency
  - object - wire,static
  - light condition - sunglare (cause)

## Analysis

THE COMMERCIAL PLT WAS TRANSPORTING ONE PAX DURING AN AIR TAXI FLT. THE PLT REPORTED THAT THE ENGINE BEGAN TO RUN ROUGH AND LOST OIL PRESSURE. HE SAID THE ENGINE SEIZED AND HE TURNED TOWARD THE EAST FOR AN EMERGENCY LANDING, ON A PARK SERVICE ROAD. THE PLT SAID THAT THE SUN PREVENTED HIS SEEING POWER LINES ACROSS THE ROAD. ON FINAL APPROACH, THE PLANE'S MAIN LANDING GEAR STRUCK THE POWER WIRES, BUT THE PLANE LANDED WITHOUT DAMAGE. A POST ACCIDENT ENGINE EXAMINATION BY AN FAA AIRWORTHINESS INSPECTOR REVEALED EVIDENCE THAT THE #1 ROD ASSEMBLY HAD FAILED AND RESULTED IN TOTAL ENGINE STOPPAGE. THE BROKEN PARTS WERE ANALYZED BY THE NTSB MATERIALS LABORATORY. THE ANALYSIS REVEALED EVIDENCE TYPICAL OF FATIGUE FRACTURES IN THE ROD ASSEMBLY.

## Aircraft

- Registration: [N71001](https://openairdocs.org/deregistered/N71001-2019-04-09), registration cancelled 2019-04-09, S/N U20602115, built 1973 (OpenAirDocs)
- Reported make and model: CESSNA 206
- Registry model: [Cessna U206F](https://openairdocs.org/model/cessna-u206f) (registry code 2073333) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 206 02115
- Airframe hours: 3362
- Engines: CONTINENTAL IO-520-F9 285 horsepower reciprocating
- Damage: No damage
- Flight: Part 135
- Registered owner: Glenn L. & Maurine D. Baxter
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 22, 1988, 36 hours before
- Departed: GJT, GRAND JUNCTION, CO
- Destination: CNY, MOAB, UT
- Flight plan: Company VFR
- Airport: NONE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 1,420 total, 200 in this make and model, 1,124 as pilot in command, 300 in the last 90 days, 100 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 6 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 59 °F, dew point 37 °F
- Altimeter: 30.00 inHg

## FAA reports on this event (1)

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

- [Incident 19880915039039I](https://openairdocs.org/incident/19880915039039I), Sep 15, 1988: Cessna U206F, Glade Park, CO. Engine siezed, struck power line while landing on a park road safely. Engine had thrown a rod due to metal fatigue.

## Other investigations on N71001 (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 WPR17LA144](https://openairdocs.org/ntsb/WPR17LA144), Jun 23, 2017: Cessna U206F (N71001), Page, AZ, substantial damage. Probable cause: The failure of the throttle control cable due to fatigue and maintenance personnel’s failure to replace the cable at the last engine overhaul, which resulted in the pilots’ inability to control…

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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