# NTSB SEA92LA118: I.C.A. Brasov IS-28B2, N28CL, Deer Park, WA, May 25, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 24, 1992, 17:30 local (May 25, 1992, 00:30 UTC)
- Place: Deer Park, WA
- Coordinates: 47.990383, -117.499809 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.9904&lon=-117.4998&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 9, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 41689
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA92LA118
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41689/pdf
- Page: https://openairdocs.org/ntsb/SEA92LA118

## Probable cause

THE INADVERTENT ACTIVATION OF FLIGHT SPOILERS BY THE PILOT AND HIS FAILURE TO MAINTAIN AIRSPEED, RESULTING IN LOSS OF CONTROL DURING TAKEOFF.  A FACTOR RELATING TO THE ACCIDENT WAS THE PRESENCE OF AN IRRIGATION SPRINKLER THAT WAS IMPACTED BY THE AIRCRAFT DURING LANDING GROUND ROLL.

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - airspeed(vso) - not maintained, pilot in command (cause)
  - spoiler extension - inadvertent activation, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - object - other (contributing factor)

## Analysis

THE PILOT INADVERTENTLY ACTIVATED THE SPOILERS AT 400 FEET AGL WHILE ATTEMPTING TO RELEASE THE TOW ROPE DURING AN AUTO-TOW LAUNCH TAKEOFF ON A 6100 FT LONG RUNWAY. THE ACFT LOST ALTITUDE, AIRSPEED AND STALLED.  THE ACFT IMPACTED IRRIGATION EQUIP WHEN THE PILOT MADE A LANDING IN A OPEN FIELD BESIDE THE RUNWAY.

## Aircraft

- Registration: [N28CL](https://openairdocs.org/aircraft/N28CL), registered now, S/N 27 (OpenAirDocs)
- Reported make and model: I.C.A. Brasov IS-28B2
- Registry model: [I.C.A.-Brasov IS-28B2](https://openairdocs.org/model/i-c-a-brasov-is-28b2) (registry code 4490102) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Serial number: 27
- Airframe hours: 863
- Engines: unknown
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Spokane Soaring Society
- Registered owner: Spokane Soaring Society
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 5, 1992, 26 hours before
- Departed: 07S, DEER PARK, WA
- Destination: 07S
- Airport: 0S7, Deer Park, runway 22, 6,100 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial; seat: rear; flight hours: 502 total, 104 in this make and model, 474 as pilot in command, 24 in the last 90 days, 13 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 6 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 46 °F
- Altimeter: 29.00 inHg
- Observed at: SFF, 17 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 19920524016009A](https://openairdocs.org/incident/19920524016009A), May 24, 1992: Brasov IS28B2, Oroville, WA, Substantial damage. Auto tow lost power. Cut glider loose. Activated spoilers by mistake. Hit irrigation sprinkler landing.

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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