ANC99LA071

NTSB accident investigation · Cessna 180J · Palmer, AK · June 9, 1999

Accident · No injuriesLimited investigationFinal report
Date
June 8, 1999, 17:00 local (Jun 9, 1999, 01:00 UTC)
Place
Palmer, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7560KCessna 180J
Weather
Visual (VMC) · Day
Status
Completed · report June 23, 2000
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19990608021959A
Case key
46565

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 failure of the pilot to maintain directional control during the water 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.

Dragged wing,rotor,pod,float or tail/skidLanding - roll
Weather condition - crosswind
Directional control - not maintainedPilot in commandCause
Water loop/swerve - inadvertent
Nose downLanding - roll

Analysis

The pilot was landing the floatplane with a left crosswind. After touchdown on the water, the floatplane swerved left, then nosed down, damaging the right wing, right aileron, and propeller. Postaccident inspection revealed the float struts were straight, and the length of the float flying wires varied by 3/4 inch. The pilot did not remember hitting anything with the floats, but the bottom of the right float had a one foot long crease near the forward compartment. No other mechanical anomalies were noted. The floats were installed 14 hours prior to the accident.

Factual narrative

On June 8, 1999, about 1700 Alaska daylight time, a float equipped Cessna 180J airplane, N7560K, sustained substantial damage during landing on Wolf Lake, Palmer, Alaska. The airline transport pilot and the one, pilot-rated passenger aboard were not injured. The airplane was being operated as a Visual Flight Rules (VFR) personal flight under 14 CFR Part 91. The flight departed from Alexander Creek, Alaska, about 1630. Visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed.

The pilot told the NTSB investigator-in-charge (IIC), during an interview on June 9, that he was landing the airplane with a left crosswind. He stated that the airplane landed on the left float first. The pilot stated that when the right float touched down, the airplane swerved left. He indicated that the airplane pitched nose down, striking the right wing and propeller. The pilot did not remember hitting anything with the floats, although the right float had a one foot long crease along the keel near the forward compartment aft bulkhead. The right wing and aileron sustained substantial damage.

Postaccident inspection revealed that the float struts were straight, and the lengths of the float flying wires varied by 3/4 inches. No other mechanical anomalies were noted with the airplane or floats. The floats were installed 14 hours prior to the accident. This was the second landing of the day.

Aircraft

Registration
N7560K
Reported as
Cessna 180J
Category
Airplane
Serial number
18052676
Airframe hours
7,876
Engine
Continental O-470-S, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Edward L. Robertson
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · April 1, 1999 · 14 hours before
Departed
Alexander Creek, AK
Destination
4AK6
Airport
4AK6 · Wolf Lake, runway 27, 3,000 × ft, water

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
Certificates
Airline transport, Flight instructor, Commercial, Flight engineer
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
11,325 total · 100 in this make and model · 7,354 as pilot in command · 200 in the last 90 days · 73 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 10 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
70 °F

FAA reports on this event · 1

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