# NTSB LAX84LA298: Cessna P210N, N4772K, Ramona, CA, May 18, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 18, 1984, 11:45 local (18:45 UTC)
- Place: Ramona, CA
- Coordinates: 33.069271, -116.830184 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.0693&lon=-116.8302&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 24267
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX84LA298
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/24267/pdf
- Page: https://openairdocs.org/ntsb/LAX84LA298

## Sequence of events

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

- Loss of control - in flight, maneuvering
  - stall/spin - intentional, pilot in command (contributing factor)
  - emergency procedure - attempted, pilot in command
- Airframe/component/system failure/malfunction, descent - uncontrolled
  - safety system(other) - failure,total (cause)
  - remedial action - not possible
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - ground

## Analysis

AS PART OF AN EXPERIMENTAL TEST FLT IN THE TURBINE POWERED ACFT, INTENTIONAL SPINS WERE PERFORMED. THE PLANNED ONE TURN SPIN EVOLVED INTO A FLAT SPIN. RECOVERY PROCEDURES WERE INEFFECTIVE AND THE PLT ELECTED TO DEPLOY THE ANTI-SPIN PARACHUTE. DESPITE REPEATED EFFORTS BY THE PILOT, THE ANTI-SPIN PARACHUTE WOULD NOT OPEN. DESCENDING OUT OF CONTROL THROUGH 7000 FT, THE PLT SUCCESSFULLY EGRESSED FROM THE ACFT & PARACHUTED SAFELY TO THE GROUND.

## Aircraft

- Registration: [N4772K](https://openairdocs.org/deregistered/N4772K-2014-10-14), registration cancelled 2014-10-14, S/N P21000303, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA P210N
- Registry model: [Cessna P210N](https://openairdocs.org/model/cessna-p210n) (registry code 2073454) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane
- Serial number: P21000303
- Engines: P&W PT6A-135 750 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Advance Aircraft Corp
- Registered owner: Drew & Henrikson
- Airworthiness certificate: Special, Experimental (Special)
- Departed: CRQ, CARLSBAD, CA
- Destination: CRQ

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 63; flight instructor, commercial; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 21,260 total, 302 in this make and model, 21,000 as pilot in command, 82 in the last 90 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 2 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 81 °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 19840518062879A](https://openairdocs.org/incident/19840518062879A), May 18, 1984: Cessna P210N, Ramona, CA, Destroyed. Entered flat spin during spin test unable to recover. Anti spin chute failed to deploy. Pilot bailed out.

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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