DEN07LA124

NTSB accident investigation · Cessna A185F · Englewood, CO · July 20, 2007

Accident · No injuriesLimited investigationFinal report
Date
July 20, 2007, 14:58 local (20:58 UTC)
Place
Englewood, CO
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N78011Cessna A185F
Weather
Visual (VMC) · Day
Status
Completed · report September 27, 2007
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20070720015979A
Case key
66296

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

This case was revised 10/31/2007.

Low compression in number 2 cylinder, which reduced the airplane's climb capability. Contributing factors in this accident were the high density altitude conditions, and the tree.

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 engine power(partial) - mech failure/malfTakeoff - initial climb
Engine assembly,cylinder - low compressionCause
Aircraft performance,climb capability - reducedCause
Weather condition - high density altitudeFactor
Forced landingManeuvering
On ground/water collision with objectLanding - roll
Object - tree(s)Factor

Analysis

This case was revised 10/31/2007.

The pilot said he used a normal takeoff technique and rotated 10 knots higher than the recommended POH (Pilot Operating Handbook) speed. He tried "to stay in what little ground effect that was possible...[but] climb performance began to degrade after a few moments." He decided not to continue towards the south, but turned to parallel an interstate highway. During the turn, he had to maneuver the airplane to avoid hitting an overhead sign. The maneuver "scrubbed off enough energy/airspeed" that the pilot "elected to make a precautionary landing" and avoid "possibly stalling the airplane." The pilot landed on an embankment adjacent to the E-470 toll road. During the landing roll, the left wing struck a pine tree near the lift strut, damaging the main spar. Documents submitted by the pilot indicated the airplane was at or near gross weight and was within center of gravity limits. Density altitude was estimated to be between 8,800 and 9,200 feet msl. The pilot later examined the engine and reported the compression on No. 2 cylinder was 40/80.

Factual narrative

This case was revised 10/31/2007

On July 20, 20074, at 1458 mountain daylight time, a Cessna A185F (equipped with Aerocet 3400 amphibious floats), N78011, piloted by a commercial pilot, was substantially damaged when the it struck a tree during a forced landing after the airplane failed to climb out of ground effect following takeoff from Runway 17L at Centennial Airport (APA), Englewood, Colorado. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91 without a flight plan. The pilot and two passengers on board the airplane were not injured. The cross-country flight originated at 1504 and was en route to Sturgis (49B), South Dakota.

The pilot said he used a normal takeoff technique and rotated 10 knots higher than the recommended POH (Pilot Operating Handbook) speed. He tried "to stay in what little ground effect that was possible...[but] climb performance began to degrade after a few moments." He decided not to continue towards the south, but turned to parallel an interstate highway. During the turn, he had to maneuver the airplane to avoid hitting an overhead sign. The maneuver "scrubbed off enough energy/airspeed" that the pilot "elected to make a precautionary landing" and avoid "possibly stalling the airplane." The pilot landed on an embankment adjacent to the E-470 toll road. During the landing roll, the left wing struck a pine tree near the lift strut, damaging the main spar.

Documents submitted by the pilot indicated the airplane was at or near gross weight and was within center of gravity limits. Density altitude was estimated to be between 8,800 and 9,200 feet msl.

On September 18, 2007, the pilot examined the engine and found that the compression on No. 2 cylinder was 40/80.

Aircraft

Registration
N78011
Reported as
Cessna A185F
Category
Airplane
Serial number
3902
Airframe hours
5,384
Engine
Continental IO-520-D, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Marine Resources, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 2006
Departed
APA · Englewood, CO
Destination
49B · Sturgis, SD
Airport
APA · Centennial, runway 17L, 10,002 × 100 ft, asphalt

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
47
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 2, With waivers/limitations
Seat
Left
Flight hours
2,650 total · 151 in this make and model · 2,575 as pilot in command · 43 in the last 90 days · 25 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 14 knots, gusting 19
Visibility
10 statute miles
Lowest ceiling
None
Temperature
86 °F, dew point 48 °F
Altimeter
30.09 inHg
Observed at
APA

FAA reports on this event · 1

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