- Date
- December 10, 1982, 10:30 local (16:30 UTC)
- Place
- Over Fargo, ND
- Injuries
- 3 uninjured
- Damage
- Minor damage
- Phase of flight
- Enroute
- Aircraft
- N1500EGates Lear Jet 35A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report December 10, 1983
- Report
- Approved by Office Director
- FAA report
- 19821210070549I
- Case key
- 72125
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.
Analysis
While level at FL370 Over Fargo, ND, the crew heard a loud bang in the engine area and the aircraft experienced a sudden loss of cabin pressure. At the same time, the crew noticed that they had lost power on the #2 engine. After securing the engine and regaining control of the cabin pressurization, the flight was continued to milwaukee, WI, without further incident. Examination revealed two jagged holes in the engine cowl and one through the aft fuselage. Detailed examination of the engine revealed that it had experienced a segment separation of the 2nd stage low pressure turbine disc. The chunk failure was a result of improper machining of the forward side web area of the disc. The pressurization drop occurred when separation disc fragments struck and disabled the 3 way bleed valve.
Aircraft
- Registration
- N1500E
- Reported as
- Gates Lear Jet 35A
- Category
- Airplane
- Serial number
- 124
- Engine
- Airresearch TFE-731-2-2B, 3,500 lbs thrust, turbo fan
- Damage
- Minor damage
- Flight
- Executive/Corporate · Part 91
- Operator
- Bucyrus Erie Company
- Registered owner
- Bucyrus Erie Company
- Departed
- Jamestown, ND
- Destination
- Milwaukee, WI
- Flight plan
- IFR
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 56
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Flight hours
- 18,700 total · 2,500 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.