CHI07LA037

NTSB accident investigation · Piper PA-31T1 · Waterloo, IA · December 13, 2006

Accident · No injuriesLimited investigationFinal report
Date
December 13, 2006, 08:00 local (14:00 UTC)
Place
Waterloo, IA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N20DLPiper PA-31T1
Weather
Visual (VMC) · Day
Status
Completed · report January 31, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20061213028589A
Case key
65099

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 go-around not performed and the improper flare by the pilot during landing.

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.

Hard landingLanding - flare/touchdown
Terrain condition - ground
Go-around - not performedPilot in commandCause
Flare - improperPilot in commandCause

Analysis

The airplane made a hard landing during a visual approach. The pilot reported he applied engine power to soften the landing and the left engine "spooled up faster" than the right engine, which veered the airplane to the right. The pilot then reduced engine power again in order "to maintain control of the airplane." He stated that the airplane was still not aligned with the runway when it impacted the ground.

Factual narrative

On December 13, 2006, at 0800 central standard time, a Piper PA-31T1, N20DL, received substantial damage on impact with terrain during a hard landing on runway 18 (6,002 feet by 129 feet, asphalt) at Waterloo Municipal Airport (ALO), Waterloo, Iowa. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 business flight was operating on an instrument rules flight plan. The commercial pilot and two passengers were uninjured. The flight departed from Ankeny Regional Airport, Ankeny, Iowa, at 0730 and was en route to ALO.

The pilot reported that he was vectored by air traffic control for the VOR 18 approach at ALO. He was able to make a visual approach to the runway after seeing it approximately two to three miles from the approach end of the runway. When the airplane neared the runway, the pilot applied landing flaps and reduced the engine power. During the flare, he applied engine power to soften the landing. The left engine "spooled up faster" than the right engine, which veered the airplane to the right. The pilot then reduced engine power again in order "to maintain control of the airplane." He stated that the airplane was still not aligned with the runway when it impacted the ground.

Aircraft

Registration
N20DL
Reported as
Piper PA-31T1
Category
Airplane
Serial number
31T-8004045
Airframe hours
7,112
Engines
Pratt & Whitney Canada PTGA-11, 500 horsepower, turbo propPratt & Whitney Canada PTGA-11, 500 horsepower, turbo prop
Damage
Substantial damage
Flight
Business · Part 91
Registered owner
Central Iowa Energy Cooperative
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · December 1, 2006
Departed
IKV · Ankeny, IA
Destination
ALO · Waterloo, IA
Flight plan
IFR
Airport
ALO · Waterloo Regional Airport, runway 18, 6,002 × 150 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
28
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
December 1, 2006
Seat
Left
Flight hours
3,440 total · 110 in this make and model · 3,240 as pilot in command · 70 in the last 90 days · 20 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 5 knots
Visibility
6 statute miles
Lowest ceiling
None
Temperature
25 °F, dew point 21 °F
Altimeter
29.95 inHg
Observed at
ALO

FAA reports on this event · 1

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