Learjet 36 N136DH

Summary

On 4 June 2007 at about 05:30 local time, a Learjet 36 registered N136DH, operated by Intermap Technologies, was involved in an incident near Bismarck, North Dakota, United States. 2 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

4 June 2007 at 05:30

Classification

Incident

Location

Bismarck, North Dakota, United States

Nearest airport

Bismarck (KBIS)

Coordinates

Not recorded

Aircraft

Learjet 36

Registration

N136DH

Category

Airplane

Engines

2

Operator

Intermap Technologies

Operating rule

Part 91: General Aviation

Purpose of flight

Business

Phase of flight

Not recorded

Route

Bismarck → Bismarck

Aircraft damage

Minor

NTSB number

ENG07IA030

Nobody was injured.

A total loss of engine power during takeoff due to the right engine sustaining a fractured fan blade after the ingestion of a mallard duck. Some liberated fan blade fragments were uncontained, penetrating the nacelle.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

A Learjet 36A experienced a bird strike on the right hand engine during takeoff. One fan blade of the engine fractured below the mid-span and all others had tears on the leading edges. Some of the liberated fan blade fragments were ejected through the engine fan case just forward of the fan containment ring in three different clocking locations. One fragment passed through the top portion of the oil tank, breaching it. Another ejected blade fragment penetrated the nacelle skin but neither was in the direction of the fuselage, thus limiting the damage only to the nacelle. The bird was identified as a male mallard duck.

Quoted verbatim from the NTSB record.