# NTSB ANC84FA192: Cessna 305A, N5312G, Anchorage, AK, September 28, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: September 27, 1984, 20:04 local (Sep 28, 1984, 04:04 UTC)
- Place: Anchorage, AK
- Coordinates: 61.220729, -149.85054 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2207&lon=-149.8505&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4234
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC84FA192
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4234/pdf
- Page: https://openairdocs.org/ntsb/ANC84FA192

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - landing gear,tailwheel assembly - incorrect (cause)
  - maintenance - improper, company maintenance personnel (cause)
  - directional control - not maintained, pilot in command
  - ground loop/swerve - inadvertent, pilot in command

## Analysis

DURING THE ROLLOUT THE TAIL WHEEL BEGAN TO SHIMMY AND THE ACFT SWERVED TO THE RIGHT AND GROUND LOOPED. THE LEFT WING AND LEFT HORIZONTAL STABILIZER CONTACTED THE GROUND. INVESTIGATION REVEALED THAT THE TAIL WHEEL SPRING ASS'Y WAS OVERSIZED AND NOT PROPERLY SECURED. THIS WAS THE FOURTH REPORTED OCCURRENCE INVOLVING GROUND DIRECTIONAL CONTROL PROBLEMS IN THIS ACFT.

## Aircraft

- Registration: [N5312G](https://openairdocs.org/deregistered/N5312G-2018-05-10), registration cancelled 2018-05-10, S/N 22746, built 1951 (OpenAirDocs)
- Reported make and model: CESSNA 305A
- Registry model: [Cessna 305A](https://openairdocs.org/model/cessna-305a) (registry code 2074002) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 22746
- Airframe hours: 501
- Engines: CONTINENTAL O-470-11B 213 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 91
- Registered owner: Civil Air Patrol, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, August 1, 1984, 99 hours before
- Departed: MRI, ANCHORAGE, AK
- Destination: MRI, ANCHORAGE, AK
- Flight plan: Military VFR
- Airport: MRI, Merrill, runway 24, 4,000 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 1,350 total, 79 in this make and model, 1,279 as pilot in command, 90 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 50 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: MRI, 4 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 19840927056869A](https://openairdocs.org/incident/19840927056869A), Sep 27, 1984: Cessna 305A, Anchorage, AK, Substantial damage. Ground looped on rollout. 4th incident with control problem. Tailwheel spring leaf oversized, not firmly fastened.

## Other investigations on N5312G (4)

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 CEN16LA064](https://openairdocs.org/ntsb/CEN16LA064), Nov 24, 2015: Cessna 305A (N5312G), Sulphur, LA, substantial damage. Probable cause: The loss of engine power due to water and contaminants in the carburetor, which resulted in a forced landing to a wet field.
- [NTSB ERA10CA257](https://openairdocs.org/ntsb/ERA10CA257), May 6, 2010: Cessna 305A (N5312G), Fort Pierce, FL, substantial damage. Probable cause: The pilot's failure to maintain directional control during a crosswind landing.
- [NTSB ANC86LA097](https://openairdocs.org/ntsb/ANC86LA097), Jul 3, 1986: Cessna 305 (N5312G), Figure Eight Lk, AK, substantial damage
- [NTSB ANC73DAG76](https://openairdocs.org/ntsb/ANC73DAG76), Jan 23, 1973: Cessna 305A (N5312G), Anchorage, AK, 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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