# NTSB FTW83LA074: Cessna 210N, N6610Y, Houston, TX, December 31, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 31, 1982, 08:15 local (14:15 UTC)
- Place: Houston, TX
- Location: 29.7633° N, 95.3633° W: Placed by OpenAirDocs: center of Houston, TX, within about 14 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.7633&lon=-95.3633&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 31, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71106
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83LA074
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71106/pdf
- Page: https://openairdocs.org/ntsb/FTW83LA074

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise - normal
  - electrical system,alternator - failure,partial (contributing factor)
  - electrical system,alternator - separation (contributing factor)
  - electrical system,electric wiring - vibration (contributing factor)
  - electrical system,electric wiring - disconnected (contributing factor)
  - electrical system - failure,total (contributing factor)
- Main gear collapsed, landing - flare/touchdown
  - precautionary landing - performed, pilot in command
  - emergency procedure - performed, pilot in command (cause)
  - gear down and locked - not attained, pilot in command (cause)

## Analysis

ENROUTE IN IMC THE ACFT HAD A COMPLETE ELECTRICAL FAILURE. THE PLT DESCENDED TO VFR CONDITIONS & ELECTED TO LAND AT WEISER ARPT. THE PLT LOWERED THE GEAR ELECTRICALLY BUT DID NOT RECEIVE A GREEN DOWN & LOCKED INDICATION. HE THEN PUMPED THE EMERGENCY EXTENSION HANDLE BUT STILL DID NOT GET A GREEN DOWN & LOCKED INDICATION. THE MAIN GEAR RETRACTED DURING THE LANDING. HAD THE PLT CONTINUED TO MANUALLY PUMP HE WOULD HAVE LOCKED THE GEAR DOWN. THE ALTERNATOR FAN BLADE HAD SEPARATED & EXITED THROUGH THE ENG COWLING. THE RESULTANT VIBRATION CAUSED THE ALTERNATOR GROUND WIRE TO SEPARATE FROM ITS ATTACH POINT CAUSING THE TOTAL ELECTRICAL FAILURE.

## Aircraft

- Registration: [N6610Y](https://openairdocs.org/deregistered/N6610Y-1988-04-06), registration cancelled 1988-04-06, S/N 21064458 (OpenAirDocs)
- Reported make and model: CESSNA 210N
- Registry model: [Cessna 210N](https://openairdocs.org/model/cessna-210n) (registry code 2073453) (OpenAirDocs)
- Category: Airplane
- Serial number: 21064458
- Airframe hours: 979
- Engines: CONTINENTAL IO-520-L 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Air Exchange
- Registered owner: Air Exchange
- Departed: C, ADDISON, TX
- Destination: C, HOUSTON, TX
- Flight plan: IFR
- Airport: T17, Weiser, runway 9, 3,570 × 110 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 1,650 total, 600 in this make and model, 1,500 as pilot in command, 140 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 100° at 13 knots
- Visibility: 5 statute miles
- Lowest ceiling: 3,800 ft overcast
- Temperature: 108 °F
- Altimeter: 30.00 inHg
- Observed at: IAH

## 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 19821231065309A](https://openairdocs.org/incident/19821231065309A), Dec 31, 1982: Cessna 210N, Houston, TX, Substantial damage. Lost electric power when alternator failed. On manual gear extension failed to lock down. Gear collapsed on landing

## Other investigations on N6610Y (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 FTW86LA083](https://openairdocs.org/ntsb/FTW86LA083), May 9, 1986: Cessna 210N (N6610Y), Tyler, TX, 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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