# NTSB SEA84LA148: Glasflugel 604, N165D, W Silver Spring, NV, June 25, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 24, 1984, 18:00 local (Jun 25, 1984, 01:00 UTC)
- Place: W Silver Spring, NV
- Coordinates: 39.370414, -119.260444 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.3704&lon=-119.2604&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39949
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA84LA148
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39949/pdf
- Page: https://openairdocs.org/ntsb/SEA84LA148

## Sequence of events

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

- In flight encounter with weather, cruise
  - weather condition - thunderstorm (contributing factor)
  - weather condition - downdraft (contributing factor)
  - precautionary landing - performed, pilot in command
- In flight collision with object, landing
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)

## Analysis

THE GLIDER PLT WAS RETURNING TO THE DOUGLAS COUNTRY ARPT AFTER A 470 MI X-COUNTRY FLT. WHILE AT ABOUT 10,000 FT, HE ENCOUNTER A DOWNDRAFT THAT WAS ASSOCIATED WITH A NEARBY THUNDERSTORM & LOST ABOUT 7000 FT IN 7 MILES. HE ELECTED TO LAND ON A HIGHWAY. JUST AS HE HAD EXTENDED THE GEAR & WAS LANDING, HE SAW A LARGE CAUTION SIGN, BUT WAS UNABLE TO FLY OVER IT. THE RIGHT WING STRUCK THE SIGN & WAS TORN OFF.

## Aircraft

- Registration: [N165D](https://openairdocs.org/aircraft/N165D), registered now, S/N 3 (OpenAirDocs)
- Reported make and model: GLASFLUGEL 604
- Registry model: [Glasflugel 604](https://openairdocs.org/model/glasflugel-604) (registry code 3800348) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Airframe hours: 1000
- Engines: unknown
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Daniel Danieli
- Last inspection: Annual, June 9, 1984, 10 hours before
- Departed: DC, MINDEN, NV
- Destination: MINDEN, NV

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 1,509 total, 320 in this make and model, 1,389 as pilot in command, 68 in the last 90 days, 7 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 35 knots, gusting 45
- Visibility: 35 statute miles
- Lowest ceiling: 16,000 ft overcast

## 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 19840624031619A](https://openairdocs.org/incident/19840624031619A), Jun 24, 1984: Amtr 604, West Silver Spr, NV, Destroyed. Glider was forced to make off field landing when it encountered numerous downdrafts.

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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