# NTSB SEA93LA114: Maule M-4-210C, N51458, Moscow, ID, May 19, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 19, 1993, 16:30 local (23:30 UTC)
- Place: Moscow, ID
- Coordinates: 46.710792, -116.909545 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.7108&lon=-116.9095&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 10, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 43027
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA93LA114
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/43027/pdf
- Page: https://openairdocs.org/ntsb/SEA93LA114

## Probable cause

THE INADEQUATE VISUAL LOOKOUT BY THE PILOT AND HIS FAILURE TO MAINTAIN CLEARANCE FROM ELECTRICAL TRANSMISSION WIRES. FACTORS RELATING TO THE ACCIDENT WERE THE SUNGLARE AND THE PRESENCE OF THE WIRES.

## Sequence of events

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

- In flight collision with object, maneuvering
  - object - wire,transmission (contributing factor)
  - light condition - sunglare (contributing factor)
  - visual lookout - inadequate, pilot in command (cause)
  - clearance - not maintained, pilot in command (cause)

## Analysis

THE STUDENT PILOT INITIATED A PRACTICE LOW APPROACH TO AN OPEN FIELD IN BRIGHT SUNLIGHT CONDITIONS AND THE AIRCRAFT IMPACTED ELECTRICAL POWER LINES, SUBSTANTIALLY DAMAGING THE VERTICAL STAB.  THE STUDENT PILOT RETURNED TO THE AIRPORT WITHOUT FURTHER INCIDENT.

## Aircraft

- Registration: [N51458](https://openairdocs.org/aircraft/N51458), registered now, S/N 1114C, built 1973 (OpenAirDocs)
- Reported make and model: MAULE M-4-210C
- Registry model: [Maule M-4-210C](https://openairdocs.org/model/maule-m-4-210c) (registry code 5460112) (OpenAirDocs)
- Registry engine: [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series) (registry code 17025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1114C
- Engines: CONTINENTAL IO-360-D 210 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Mccall, Randy L.
- Registered owner: Mccall, Randy L.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 6, 1992
- Departed: PUW, PULLMAN, WA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; student; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 51 total, 51 in this make and model, 38 as pilot in command, 15 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: 15,000 ft broken
- Temperature: 84 °F, dew point 57 °F
- Altimeter: 29.00 inHg
- Observed at: PUW, 13 nm away

## 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 19930519014659A](https://openairdocs.org/incident/19930519014659A), May 19, 1993: Maule M4210C, Moscow, ID, Substantial damage. Vertical stabilizer tip was torn off by impact with power line during practice ground maneuvers. Returned to base.

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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