# NTSB ATL82DA275: Cessna 172F, N8423U, Millry, AL, September 15, 1982

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: September 15, 1982, 11:30 local (17:30 UTC)
- Place: Millry, AL
- Coordinates: 31.61915, -88.310531 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.6192&lon=-88.3105&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report September 15, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71711
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL82DA275
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71711/pdf
- Page: https://openairdocs.org/ntsb/ATL82DA275

## 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
  - exhaust system,stack - cracked (cause)
  - maintenance,annual inspection - poor, company maintenance personnel (cause)
- Forced landing, landing - roll
  - landing gear,nose gear - buckled (contributing factor)

## Analysis

THE PILOT EXPERIENCED A PARTIAL LOSS OF POWER DURING A FERRY FLIGHT AND WAS FORCED TO MAKE AN EMERGENCY LANDING IN A FIELD. HE STATED THAT HE NOTED 4 VIBRATIONS FOLLOWED BY A MISSING IN THE ENGINE. THE RPM DROPPED TO 1200 AND HE COULD NOT MAINTAIN ALTITUDE. OCCASIONALLY, BY PUMPING THE THROTTLE HE WAS ABLE TO INCREASE THE RPM ABOVE 1200. EXAMINATION REVEALED A SEPARATION OF THE RIGHT EXHAUST FLAME TUBE WHICH SUBSEQUENTLY CAUSED A POWER LOSS.

## Aircraft

- Registration: [N8423U](https://openairdocs.org/deregistered/N8423U-2013-07-24), registration cancelled 2013-07-24, S/N 17252323, built 1964 (OpenAirDocs)
- Reported make and model: CESSNA 172F
- Registry model: [Cessna 172F](https://openairdocs.org/model/cessna-172f) (registry code 2072414) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17252323
- Airframe hours: 2259
- Engines: CONTINENTAL O-300-D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Ferry, Part 91
- Operator: Thomas H. Hopkins
- Registered owner: Thomas H. Hopkins
- Departed: MOB, AL
- Destination: 23A, AL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 87; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; flight hours: 796 total, 529 in this make and model, 736 as pilot in command, 2 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 0° at 6 knots
- Visibility: 10 statute miles
- Temperature: 189 °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 19820915049399A](https://openairdocs.org/incident/19820915049399A), Sep 15, 1982: Cessna 172F, Millry, AL, Substantial damage. Forced landing due to power loss. Severed nose gear on a levee. Exhaust flame tubes cracked, deformed, one missing.

## Other investigations on N8423U (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 ATL82IA076](https://openairdocs.org/ntsb/ATL82IA076), Mar 20, 1982: Cessna 172F (N8423U), Mobile, AL, incident, minor 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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