NYC05LA012

NTSB accident investigation · Douglas Adventure Air Ampib · Pawtucket, RI · October 29, 2004

Accident · FatalLimited investigationFinal report
Date
October 29, 2004, 17:00 local (21:00 UTC)
Place
Pawtucket, RI
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Approach
Aircraft
N469PDDouglas Adventure Air Ampib
Weather
Visual (VMC) · Day
Status
Completed · report October 31, 2006
Report
Approved by Office Director
Parties
FAA/FSDO
FAA report
20041029028879A
Case key
60459

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's failure to maintain aircraft control, which resulted in an inadvertent stall.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightApproach - vfr pattern - base turn
Aircraft control - not maintainedPilot in commandCause
Stall/spin - inadvertentPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The pilot had completed construction of the accident airplane, and an FAA inspector had approved it for flight and issued a special airworthiness certificate. On the day of the accident, which was the second flight conducted since the construction was completed, witnesses observed the airplane in the airport traffic pattern. As the airplane turned onto the base leg, about 500 feet above the ground, it suddenly "nosed over," and spiraled towards the ground. The witnesses also recalled that the engine "sputtered" just prior to it descending. An additional witness recalled that the engine was "revving at full power" as it descended. The airplane came to rest about 1 mile from the airport, where a post-crash fire consumed the wreckage. According to a statement posted by the accident owner/pilot on a website message board dedicated to Adventurer experimental amphibian airplanes, the pilot stated that he had modified the elevator of the airplane from a 3 degree maximum up angle, to a 18 degree maximum up angle for the accident flight, "to see if I have leveled out the wings, and if I can get sufficient elevator up travel to climb out of the airport at 90mph." Examination of the wreckage revealed that the airplane's automotive type engine was extensively damaged by the post-crash fire, and further examination could not be performed. Also noted were several socks filled with steel ball bearings, weighing approximately 25 pounds, and 1 or 2-50-pound bags of ballast in the wreckage. The exact location of where the socks and ballast were stationed during the flight could not be determined.

Factual narrative

On October 29, 2004, about 1700 eastern daylight time, an amateur built Adventure Air AMPIB, N469PD, was destroyed while landing at the North Central State Airport (SFZ), Pawtucket, Rhode Island. The certificated private pilot was fatally injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91.

According to a Federal Aviation Administration (FAA) inspector, the pilot had recently completed construction of the accident airplane. On September 21, 2004, an FAA inspector conducted an inspection of the airplane, approved it for flight, and issued a special airworthiness certificate.

The accident flight was the second flight conducted since the construction was completed.

On the day of the accident, witnesses observed the airplane in the airport traffic pattern, utilizing runway 23. As the airplane turned onto the base leg, about 500 feet above the ground, it suddenly "nosed over," and spiraled towards the ground. The witnesses also recalled that the engine "sputtered" just prior to it descending. An additional witness recalled that the engine was "revving at full power" as it descended.

The airplane came to rest about 1 mile from runway 23, where a post-crash fire consumed the wreckage.

According to a statement posted by the accident owner/pilot on October 25, 2004, on a website message board dedicated to Adventurer experimental amphibian airplanes, "I am happy to report that I took N469PD to the air for the first time, October 21...I set rudder trim two clicks to the right to compensate for prop wash, accelerated to 45-50, let tail come up, pushed nose over and down slightly, and lifted off at about 90 mph. Upon liftoff, I found that I was carrying a lot of right stick to try to get the 'heavy' left wing to come up. The stick was also all the way back, and I was in a climbing left turn (this is before I changed the elevator up angle, it was at 3 degrees max up for this first flight, now it is at 18 degrees max up)...Next sunny calm morning, will do another short flight to see if I have leveled out the wings, and if I can get sufficient elevator up travel to climb out of the airport at 90mph..."

Examination of the wreckage by a FAA inspector revealed that the airplane's automotive type engine was extensively damaged by the post-crash fire, and further examination could not be performed. The inspector also noted several socks filled with steel ball bearings, weighing approximately 25 pounds, and 1 or 2 50-pound bags of ballast in the wreckage. The exact location of where the socks and ballast were stationed during the flight could not be determined.

Examination of the tie-down area where the pilot kept the airplane revealed two additional 50-pound bags of ballast.

The pilot reported 292 total hours of flight experience on his most recent application for an FAA third class medical certificate, which was dated July 22, 2004.

The pilot did not hold an FAA mechanic certificate, nor did he hold the appropriate aircraft builder certificate.

The weather recorded at the airport, about the time of the accident, included winds from 240 degrees at 3 knots, and clear skies.

Aircraft

Registration
N469PD
Reported as
Douglas Adventure Air Ampib
Category
Airplane, amateur-built
Serial number
102B
Engine
Chevrolet ZZ4, 333 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Paul I. Douglas
Airworthiness certificate
Special, Experimental (Special)
Departed
SFZ · Pawtucket, RI
Airport
SFZ · North Central State Airport

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
53
Injuries
Fatal
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Toxicology
Performed
Flight hours
292 total

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 43 °F
Altimeter
29.97 inHg
Observed at
SFZ

Docket · 3

The files NTSB released with the investigation on August 8, 2006, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.6 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.