IAD96LA129

NTSB accident investigation · Aerofab Lake 250 · Adirondack, NY · August 7, 1996

Accident · Minor injuriesLimited investigationFinal report
Date
August 7, 1996, 13:30 local (17:30 UTC)
Place
Adirondack, NY
Injuries
2 minor
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N8428FAerofab Lake 250
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1998
Report
Approved by Office Director
FAA report
19960807021609A
Case key
28095

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

On this page

Probable cause

the pilot's improper in-flight planning/decision, which resulted in his failure to ensure that he could maintain sufficient altitude and clearance from mountainous terrain after entering a blind canyon. Haze and the terrain were related factors.

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.

In flight collision with terrain/waterClimb
In-flight planning/decision - improperPilot in commandCause
Terrain condition - mountainous/hillyFactor
Weather condition - haze/smokeFactor
Terrain condition - blind/box canyonFactor
Altitude/clearance - not maintainedPilot in commandCause

Analysis

The pilot reported that he was sightseeing, looking for a resort area to land. He stated that his flight was uneventful, until he initiated a climb between two mountain ranges, then he heard the stall warning horn sound. He stated that he was close to the ground, so he did not look inside the cockpit. He stated that when he added full power, the engine sounded normal, but the stall warning horn sounded a second and a third time. Also, he stated that he made a controlled stall-type landing onto the tree tops. According to an FAA safety inspector, the pilot reported that he could not see the ridge clearly due to haze. The accident site was at an approximate elevation of 2900 feet. The height of the mountain was about 3300 feet.

Factual narrative

On August 7, 1996, at 1330 eastern daylight time (EDT), an Aerofab, Inc., Lake 250, N8428F, crashed in mountainous terrain 10 miles south of Saranac Lake, in Adirondack, New York. The certificated commercial pilot and the one passenger received minor injuries. The airplane was destroyed. Visual meteorological conditions prevailed and a flight plan was not filed. The personal flight was conducted under 14 CFR Part 91. The flight originated in Burlington, Vermont, at 1130 EDT. The intended destination was Saranac Lake, in Adirondack, New York.

According to the pilot, he was sightseeing, looking for a resort area. He stated that he circled looking for a landing area, but decided not to land at that lake. He stated that he initiated a climb between two mountain ranges, but,"...I became uncomfortable with my choice of which mountain pass to traverse...at this point everything started to go awry. Although the sound of the engine remained essentially unchanged, it became difficult for me to continue a climb...I was rapidly losing my clearance above the tree tops...I was close enough to the ground that I didn't dare take my eyes and attention into the cockpit. At this point the yoke began to feel mushy, and I advanced the engine and propeller controls. The stall warning horn sounded once...The engine and propeller noise still sounded normal, but the stall warning horn sounded a second time and a third time...I had to make a controlled stall-type landing onto the tree tops... ."

According to a Federal Aviation Administration Safety Inspector, the pilot reported that he could not see the ridge clearly due to the haze. The FAA Safety Inspector reported that the accident site was at an approximate elevation of 2900 feet. The height of the mountain was 3300 feet.

Aircraft

Registration
N8428F
Reported as
Aerofab Lake 250
Category
Airplane
Serial number
96
Airframe hours
346
Engine
Lycoming IO-540-C4B5, 250 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
William M. Black
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 10, 1996 · 105 hours before
Departed
BTV · Burlington, VT
Destination
SLK · Saranac Lake, NY

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
44
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,456 total · 91 in this make and model · 1,410 as pilot in command · 25 in the last 90 days · 11 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 8 knots
Visibility
8 statute miles
Lowest ceiling
5,000 ft broken
Temperature
81 °F, dew point 63 °F
Altimeter
30.00 inHg
Observed at
SLK, 10 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.