Delta A332 near Toronto on May 20th 2017, engine vibrations

Last Update: May 30, 2017 / 20:16:47 GMT/Zulu time

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Incident Facts

Date of incident
May 20, 2017

Classification
Incident

Flight number
DL-135

Aircraft Registration
N861NW

Aircraft Type
Airbus A330-200

ICAO Type Designator
A332

A Delta Airlines Airbus A330-200, registration N861NW performing flight DL-135 from Amsterdam (Netherlands) to Detroit,MI (USA), was enroute at FL400 about 180nm northeast of Toronto,ON (Canada) when the crew decided to divert to Toronto due to vibrations of the right hand engine (PW4168). The aircraft landed safely on Toronto's runway 05 about 35 minutes later.

The occurrence aircraft remained on the ground in Toronto for 32 hours, then positioned to Detroit and resumed service another 16 hours after landing in Detroit.

The aircraft became involved into two more engine related occurrences, see Incident: Delta A332 near Amsterdam on May 24th 2017, repeated engine stalls and wing anti ice faults and Incident: Delta A332 over Atlantic on May 26th 2017, engine problem.

On May 30th 2017 the Canadian TSB reported the aircraft was enroute at FL400 when the aircraft encountered light turbulence, the crew decided to descend the aircraft to FL340 at 500 fpm. Afterwards the crew observed two compressor stalls on the right hand engine. The flight crew reduced the engine to idle before advancing the thrust lever to the climb detent again, at which point the engine stalled a third time. The pilot flying reduced the engine to idle for the remainder of the flight, the engine showing normal indications, and diverted to Toronto for a safe landing. Maintenance performed a borescopic examination of the engine with no abnormal findings. A power assurance test was found normal. There was no history of engine stalls in the 30 days prior to the occurrence, the aircraft was therefore returned to service. The TSB annotated: "Additional troubleshooting and inspections may occur once the aircraft returns to the operator's maintenance base."
Aircraft Registration Data
Registration mark
N861NW
Country of Registration
United States
Date of Registration
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TCDS Ident. No.
Manufacturer
AIRBUS
Aircraft Model / Type
A330-223
Number of Seats
ICAO Aircraft Type
A332
Year of Manufacture
Serial Number
Aircraft Address / Mode S Code (HEX)
Engine Count
Engine Manufacturer
Engine Model
Engine Type
Pounds of Thrust
Main Owner
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Incident Facts

Date of incident
May 20, 2017

Classification
Incident

Flight number
DL-135

Aircraft Registration
N861NW

Aircraft Type
Airbus A330-200

ICAO Type Designator
A332

This article is published under license from Avherald.com. © of text by Avherald.com.
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