Diamond DA 40 NG N154BY

Summary

On 20 April 2017 at about 14:19 local time, a Diamond DA 40 NG registered N154BY, operated by CTC Aviation Leasing (Us) Inc, was involved in an accident near Goodyear, Arizona, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

20 April 2017 at 14:19

Classification

Accident

Location

Goodyear, Arizona, United States

Nearest airport

Phoenix Goodyear (GYR)

Coordinates

33.4058, -112.4086

Aircraft

Diamond DA 40 NG

Registration

N154BY

Category

Airplane

Engines

1

Operator

CTC Aviation Leasing (Us) Inc

Operating rule

Part 91: General Aviation

Purpose of flight

Instructional

Phase of flight

Not recorded

Route

Goodyear → Goodyear

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR17LA099

Nobody was injured.

Loss of engine power due to the installation of an improper air induction hose, which failed and prevented sufficient air intake to the turbocharger.

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

Read the full NTSB narrative

The student pilot had been signed off for a solo instructional flight. He performed the preflight check, including a check of the engine control unit (ECU), and noted no discrepancies. The run-up and initial takeoff were normal. However, during the takeoff climb out, the student pilot noted an engine power change followed by an ECU A and ECU B failure annunciation. The student pilot was able to land in an open field and impacted several drainage ditches, resulting in substantial damage to the right wing. Inspection of the engine revealed that the hose that connects the air inlet to the turbocharger inlet was found to have de-laminated or collapsed. The loss of engine power was likely due to a partial vacuum in the turbo inlet and prevented the turbo from supplying the correct air inlet pressure to the engine, thus reducing power output. The investigation found that a generic air induction hose had been installed on the accident airplane that was not part number specific. The Diamond illustrated parts breakdown calls for a specific part number for two flexible induction hoses. The operator reported that they inspected their fleet of airplanes and replaced the generic hoses with Diamond Aircraft Industries Inc. (DAI) hose.

Quoted verbatim from the NTSB record.