FTW87IA108

NTSB incident investigation · Canadair CL-600 · Denton, TX · April 28, 1987

Incident · No injuriesIncident investigationFinal report
Date
April 28, 1987, 08:00 local (13:00 UTC)
Place
Denton, TX
Injuries
11 uninjured
Damage
Minor damage
Phase of flight
Enroute
Aircraft
N600KCCanadair CL-600
Weather
Visual (VMC) · Day
Status
Completed · report July 10, 1989
Report
Approved by Office Director
FAA report
19870428060379I
Case key
22284

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

On this page

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(total) - mech failure/malfClimb - to cruise
Turbine assembly,turbine blade - failure,totalCause
Turbine assembly,turbine blade - fatigueCause
Precautionary landing - performedPilot in command
Inadequate quality controlManufacturerCause

Analysis

The aircraft's right engine, while in flight, lost a blade from its fourth stage turbine wheel due to metal fatigue. This resulted in varying degrees of damage throughout the entire engine and caused the engine to shut itself down while climbing through 19,000 feet. The aircraft had departed dallas, TX, 19 minutes earlier. After the engine failure the flt returned to dallas where a single engine uneventful landing was accomplished. Examination of the failed blade revealed the metal fatigue was the result of excess porosity which was present when the blade was cast. The manufacturer agrees that this imperfection should have been detected by their inspection methods and the blade rejected. The blade failed after about 400 hours of operation.

Aircraft

Registration
N600KC
Reported as
Canadair CL-600
Category
Airplane
Serial number
1012
Airframe hours
1,310
Engine
Lycoming ALF-502L-2, 7,500 lbs thrust, turbo fan
Damage
Minor damage
Flight
Executive/Corporate · Part 91
Registered owner
Kimberly Clark Corp.
Airworthiness certificate
Standard, Normal
Last inspection
Unknown · March 5, 1987 · 35 hours before
Departed
DAL · Dallas, TX
Destination
ATW · Appleton, WI
Flight plan
IFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
42
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
8,700 total · 85 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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