# NTSB SEA84FA215: Piper PA-28-180, N6499J, The Dalles, OR, September 1, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: September 1, 1984, 09:40 local (16:40 UTC)
- Place: The Dalles, OR
- Coordinates: 45.540401, -121.149093 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.5404&lon=-121.1491&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 6 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39825
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA84FA215
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39825/pdf
- Page: https://openairdocs.org/ntsb/SEA84FA215

## Sequence of events

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

- Midair collision, climb - to cruise
  - visual lookout - inadequate, pilot in command (cause)
  - visual lookout - inadequate, pilot of other aircraft (cause)
  - clearance - not maintained, pilot in command (cause)
  - clearance - not maintained, pilot of other aircraft (cause)
- In flight collision with terrain/water, descent - uncontrolled
- Fire, other
- Midair collision, cruise - normal
  - visual lookout - inadequate, pilot in command (cause)
  - visual lookout - inadequate, pilot of other aircraft (cause)
  - clearance - not maintained, pilot in command (cause)
  - clearance - not maintained, pilot of other aircraft (cause)
- In flight collision with terrain/water, descent - uncontrolled
- Fire, other

## Analysis (aircraft 2)

N6499J DEPARTED THE DALLES MUNICIPAL ARPT SHORTLY AFTER 0930 PDT ON A FLT TO VANCOUVER, WA. N4622T DEPARTED CHENOWETH AIRFIELD ( APRX 4 NM WEST OF THE DALLES) AT ABOUT 0930 PDT ON A FLT TO THE DALLES MUNICIPAL ARPT. A WITNESS WHO OBSERVED BOTH ACFT BEFORE THE COLLISION STATED THAT N6499J WAS IN A WINGS LEVEL CLIMBING ATTITUDE PROCEEDING NORTHWEST AND N4622T WAS IN A WINGS LEVEL ATTITUDE AT A RELATIVELY CONSTANT ALTITUDE TRAVELING EASTWARD. THE WITNESS CONTINUED TO STATE THAT N4622T WAS ABOVE OR ON TOP OF N6499J WHEN THE COLLISION OCCURRED. BOTH ACFT THEN DESCENDED STEEPLY TO GROUND IMPACT AND SUBSEQUENT FIRE. THE COLLISION OCCURRED APRX 3 NM NORTHWEST OF THE DALLES, OR.

## Aircraft 1

- Registration: [N6499J](https://openairdocs.org/deregistered/N6499J-1984-09-04), registration cancelled 1984-09-04, S/N 28-4932, built 1968 (OpenAirDocs)
- Reported make and model: PIPER PA-28-180
- Registry model: [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180) (registry code 7102808) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 284932
- Engines: LYCOMING O-360-A3A 180 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: Jack E Thompson
- Airworthiness certificate: Standard, Normal
- Departed: DLS, THE DALLES, OR
- Destination: 59S, VANCOUVER, WA
- Flight plan: VFR

## Aircraft 2

- Registration: [N4622T](https://openairdocs.org/deregistered/N4622T-1984-09-04), registration cancelled 1984-09-04, S/N 90 (OpenAirDocs)
- Reported make and model: MAULE M-4
- Registry model: [Maule M-4](https://openairdocs.org/model/maule-m-4) (registry code 5460104) (OpenAirDocs)
- Category: Airplane
- Serial number: 90
- Airframe hours: 1742
- Engines: CONTINENTAL O-300-A 145 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: Mark G Wilson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 1, 1984, 0 hours before
- Departed: 60R2, CHENOWETH, OR
- Destination: DLS, THE DALLES, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot, aircraft N6499J; age 59; private; medical: class 3, valid medical--w/ waivers/lim; toxicology performed; flight hours: 320 total
- Pilot, aircraft N4622T; age 46; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 550 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 320° at 10 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: DLS, 3 nm away

## FAA reports on this event (2)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19840901073311A](https://openairdocs.org/incident/19840901073311A), Sep 1, 1984: Piper PA28180, The Dalles, OR, Destroyed, 2 fatal. During climbout. From The Dalles muni airport, heading west north west. Collided with muale 4622T.
- [Accident 19840901073312A](https://openairdocs.org/incident/19840901073312A), Sep 1, 1984: Maule M4, The Dalles, OR, Destroyed, 1 fatal. En route from one airport to another, collided with Piper N6499J.

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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