# NTSB ATL88LA229: Ryan Navion, N4575K, Cumming, GA, August 7, 1988

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: August 7, 1988, 17:00 local (21:00 UTC)
- Place: Cumming, GA
- Location: 34.2061° N, 84.1338° W: Placed by OpenAirDocs: center of Cumming, GA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.2061&lon=-84.1338&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report October 2, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 7798
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL88LA229
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/7798/pdf
- Page: https://openairdocs.org/ntsb/ATL88LA229

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise
  - fluid,fuel - starvation (cause)
  - fuel tank selector position - improper, pilot in command (cause)
- Forced landing, descent - emergency
- Ditching, landing - flare/touchdown
  - terrain condition - water

## Analysis

THE PILOT HAD MADE A PRECAUTIONARY LANDING DUE TO ENROUTE WEATHER. AFTER CONDITIONS HAD IMPROVED HE OBTAINED A WEATHER BRIEFING FOR HIS INTENDED DESTINATION. HE WAS TOLD THAT THERE WERE TSTMS IN THE AREA BUT THAT CONDITIONS WERE VFR. AFTER DEPARTURE FROM THE ENROUTE STOP, THE PILOT ATTEMPTED TO TRANSFER FUEL FROM AN AUX TANK. HE TURNED THE PUMP ON BUT DID NOT OPEN THE TRANSFER VALVE. WHEN HE ARRIVED OVER HIS DESTINATION, THERE WAS HEAVY RAIN OVER THE AIRPORT. HE ELECTED TO DIVERT TO AN ALTERNATE. ON THE WAY TO THE ALTERNATE, THE ENGINE LOST POWER FROM FUEL STARVATION AND A FORCED LANDING WAS MADE IN LAKE LANIER. THERE WERE 20 GALLONS OF FUEL IN THE AUX TANK AT THE TIME OF THE ACCIDENT.

## Aircraft

- Registration: [N4575K](https://openairdocs.org/deregistered/N4575K-1995-05-12), registration cancelled 1995-05-12, S/N NAV41575 (OpenAirDocs)
- Reported make and model: RYAN NAVION
- Registry model: [Ryan NAVION](https://openairdocs.org/model/ryan-navion) (registry code 6150160) (OpenAirDocs)
- Category: Airplane
- Serial number: NAV-4-1575
- Airframe hours: 3724
- Engines: CONTINENTAL IO-520-BGBR 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Porter Randall
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 20, 1987
- Departed: TOC, TOCCOA, GA
- Destination: 5GA4, WOODSTOCK, GA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; commercial; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 299 total, 58 in this make and model, 299 as pilot in command, 20 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 12 knots
- Visibility: 11 statute miles
- Lowest ceiling: none
- Temperature: 90 °F, dew point 72 °F
- Altimeter: 30.00 inHg
- Observed at: PDK, 21 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 19880807033659A](https://openairdocs.org/incident/19880807033659A), Aug 7, 1988: Tmpson NAVIONA, Cumming, GA, Substantial damage. Turned back by weather. Ran mains dry. Failed to open valve to transfer auxiliary fuel to mains. Landed in a lake.

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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