# NTSB NYC86FNC09: Cessna 205, N27WD, Twin Mountain, NH, September 20, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: September 20, 1986, 14:00 local (18:00 UTC)
- Place: Twin Mountain, NH
- Location: 44.2641° N, 71.5467° W: Placed by OpenAirDocs at TWIN MOUNTAIN (8B2), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.2641&lon=-71.5467&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report January 25, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 30231
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC86FNC09
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30231/pdf
- Page: https://openairdocs.org/ntsb/NYC86FNC09

## Sequence of events

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

- Loss of control - in flight, maneuvering
  - airspeed - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

DURING A 'BOMB DROP' CONTEST AT AN ORGANIZED 'FLY-IN', THE PILOT WAS MANEUVERING AT LOW AIRSPEED SO HIS PASSENGER COULD DROP A WATER-FILLED BALLOON ON A TARGET WHICH HAD BEEN PLACED ON RUNWAY 27. THE ACFT SUDDENLY BANKED TO THE RIGHT AND PITCHED DOWN STRIKING THE GROUND ON THE RIGHT EDGE OF THE RUNWAY.

## Aircraft

- Registration: [N27WD](https://openairdocs.org/aircraft/N27WD), registered now, S/N 205-0376, built 1963 (OpenAirDocs)
- Reported make and model: CESSNA 205
- Registry model: [Cessna 210-5(205)](https://openairdocs.org/model/cessna-210-5-205) (registry code 2073202) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane
- Serial number: 205-0376
- Airframe hours: 1355
- Engines: CONTINENTAL IO-470-S 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Walter Lundgren
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 9, 1985
- Airport: 8B2, Twin Mountain, runway 27, 2,750 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 385 total, 77 in this make and model, 320 as pilot in command, 56 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Lowest ceiling: none

## 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 19860920045619A](https://openairdocs.org/incident/19860920045619A), Sep 20, 1986: Cessna 2105, Twin Mountain, NH, Substantial damage. The aircraft stalled during a balloon drop during a fly in. The plane impacted the ground beside the runway.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.