# NTSB IAD05CA134: Lamont Aventura II, N9138W, Hope, ME, September 10, 2005

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Data collection · Final report
- Date: September 10, 2005, 16:10 local (20:10 UTC)
- Place: Hope, ME
- Coordinates: 44.221111, -69.18972
- Nearby events: https://openairdocs.org/map.md?lat=44.2211&lon=-69.1897&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report January 31, 2006
- Report: Approved by Office Director
- Parties: Portland, ME
- NTSB case key (mKey): 62432
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD05CA134
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62432/pdf
- Page: https://openairdocs.org/ntsb/IAD05CA134

## Probable cause

The pilot's failure to maintain airspeed, which resulted in an inadvertent stall/spin and subsequent impact with water. A factor to the accident was the wind gusts.

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - base turn
  - airspeed - not maintained, pilot in command (cause)
  - stall/spin - inadvertent
  - weather condition - gusts (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - water

## Analysis

An amateur built airplane, operated by an uncertificated pilot, completed a turn to the base traffic pattern leg.  After encountering a gust of wind, the airplane stalled, entered a spin, and impacted water, resulting in serious injury and substantial damage.

## Factual narrative

On September 10, 2005, about 1610 eastern daylight time, an amateur built Arnet Pereyra Aero Design, Aventura II, N9138W was substantially damaged during approach to Hobbs Pond near Hope, Maine. The non-certificated pilot/owner was seriously injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local personal flight, conducted under 14 CFR Part 91.

According to the pilot, the aircraft was leveling off at an altitude about 300 feet above ground level, after completing a left downwind to base traffic pattern leg. The airplane's airspeed was at 65 knots, and it was configured in the 10-degree landing flap position, when an approximate 15 knot gust of wind, "took the airplane into a stall."

The airplane entered a spin, and during the recovery by the pilot, impacted water resulting in substantial damage.

The recorded weather at BGR, about 23 nautical miles north of the accident site at 1553, included: winds from 350 degrees at 12 knots, gusting to 15 knots.

## Aircraft

- Registration: [N9138W](https://openairdocs.org/deregistered/N9138W-2007-04-12), registration cancelled 2007-04-12, S/N AP2A0089, built 2001 (OpenAirDocs)
- Reported make and model: Lamont Aventura II
- Registry model: [Lamont Walter JR AVENTURA II](https://openairdocs.org/model/lamont-walter-jr-aventura-ii) (registry code 056100L) (OpenAirDocs)
- Registry engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: AP2A0089
- Airframe hours: 112
- Engines: Rotax 912 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, June 1, 2005, 15 hours before
- Departed: BST, Belfast, ME
- Destination: NONE, Hope, ME

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; injuries: serious; medical: class 3, without waivers/limitations; last flight review June 1, 1997; seat: front; flight hours: 112 total, 112 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 12 knots, gusting 15
- Visibility: 10 statute miles
- Lowest ceiling: 6,000 ft broken
- Temperature: 70 °F, dew point 43 °F
- Altimeter: 30.13 inHg
- Observed at: BGR, 23 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 20050910030729A](https://openairdocs.org/incident/20050910030729A), Sep 10, 2005: Amtr AVENTURAII, Hope, ME, Destroyed. (-23) Inspector talked with the pilot [privacy data omitted] he is recovering at home currently. He reports that he has two compressed vertebrae (10&11) and a…

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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