# NTSB SEA91LA149: Cessna 210, N7350E, Salt Lake City, UT, June 21, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 20, 1991, 20:15 local (Jun 21, 1991, 02:15 UTC)
- Place: Salt Lake City, UT
- Coordinates: 40.650127, -112.010589 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.6501&lon=-112.0106&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 13, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 41464
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA91LA149
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41464/pdf
- Page: https://openairdocs.org/ntsb/SEA91LA149

## Probable cause

THE PILOT'S POOR INFLIGHT PLANNING AND DECISIONS IN THAT HE FAILED TO ANTICIPATE WAKE TURBULENCE FROM THE DEPARTING HELICOPTER.

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - in-flight planning/decision - poor, pilot in command (cause)
  - wake turbulence - not identified, pilot in command (cause)

## Analysis

THE AIRPLANE WAS FLARING TO LAND, WHEN IT TRAVELLED THROUGH THE VORTICES OF A HELICOPTER THAT WAS TAKING OFF NEXT TO THE RUNWAY. THE AIRPLANE LANDED HARD.

## Aircraft

- Registration: [N7350E](https://openairdocs.org/aircraft/N7350E), registered now, S/N 57050, built 1959 (OpenAirDocs)
- Reported make and model: CESSNA 210
- Registry model: [Cessna 210](https://openairdocs.org/model/cessna-210) (registry code 2073402) (OpenAirDocs)
- Registry engine: [Continental IO-470 series](https://openairdocs.org/engine/continental-io-470-series) (registry code 17044, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 57050
- Engines: CONTINENTAL IO-470-E 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Glenn E. Martin
- Registered owner: Glenn E. Martin
- Departed: RNV, RENO, NV
- Airport: U42, Salt Lake City, runway 34, 6,098 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; flight hours: 244 total, 35 in this make and model, 215 as pilot in command, 49 in the last 90 days, 29 in the last 30 days, 9 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 320° at 5 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F

## 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 19910620025969A](https://openairdocs.org/incident/19910620025969A), Jun 20, 1991: Cessna 210, Salt Lake City, UT, Substantial damage. Encountered helicopter wake on landing flare causing nose first hard impact. Army helicopter too close to runway.

## Other investigations on N7350E (2)

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 WPR21LA194](https://openairdocs.org/ntsb/WPR21LA194), May 15, 2021: Cessna 210 (N7350E), Lake Arrowhead, CA, substantial damage. Probable cause: A total loss of engine power due to a malfunction of the fuel flow manifold valve.
- [NTSB OAK72FVG07](https://openairdocs.org/ntsb/OAK72FVG07), Jul 18, 1971: Cessna 210 (N7350E), Rio Vista, CA, substantial damage

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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