KLM E190 over North Sea on Apr 27th 2018, temporary loss of both transponders

Last Update: April 29, 2018 / 15:04:19 GMT/Zulu time

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Incident Facts

Date of incident
Apr 27, 2018

Classification
Incident

Airline
KLM

Flight number
KL-1151

Destination
Oslo, Norway

Aircraft Registration
PH-EXB

Aircraft Type
Embraer ERJ-190

ICAO Type Designator
E190

A KLM Embraer ERJ-190, registration PH-EXB performing flight KL-1151 from Amsterdam (Netherlands) to Oslo (Norway), was enroute at FL390 over the North Sea about 80nm northwest of Billund (Denmark) when the active transponder of the aircraft failed, the crew switched to the alternate transponder. A few minutes later the second transponder also failed, radar contact with the aircraft was lost. The crew managed to restore at least one of the transponders near Kristiansand-Kjevik (Norway) about 7 minutes later and continued to Oslo for a safe landing about 22 minutes later.

A listener on frequencies reported the crew advised ATC that they had lost both transponders and were no longer RVSM capable. ATC however could not clear the aircraft for a descent to FL280 out of RVSM airspace due to uncertainty about the current position and an Air France Airbus A320-200 registration F-GKXH performing flight AF-1274 from Paris Charles de Gaulle (France) to Oslo (Norway) enroute at FL370 below the Embraer. Radar contact was re-established in Norwegian Airspace and the aircraft continued normally to Oslo.

Mode-S data transmitted by the aircraft were missing on all available receivers between 20:07 and 20:14Z. Other aircraft, transmitting purely on Mode-S without ADS-B, operating in the same area at around the same time remained visible however verifying that the loss of contact was not due to outage of one or more receivers and thus corroborating the report The Aviation Herald received by the listener on frequencies.

The aircraft was scheduled to overnight in Oslo and departed for its scheduled return flight KL-1140 the following morning on schedule after about 9 hours on the ground.
Aircraft Registration Data
Registration mark
PH-EXB
Country of Registration
Netherlands
Date of Registration
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Airworthyness Category
Legal Basis
Manufacturer
EMBRAER S/A - Empresa Brasileira de Aeronautica
Aircraft Model / Type
ERJ 190-100 STD
ICAO Aircraft Type
E190
Year of Manufacture
Serial Number
Aircraft Address / Mode S Code (HEX)
Maximum Take off Mass (MTOM) [kg]
Engine Count
Engine
KAniflkfAnpqkbAAl bidjjhniqqqfpqmeiq j fgfhqp Subscribe to unlock
Engine Type
Incident Facts

Date of incident
Apr 27, 2018

Classification
Incident

Airline
KLM

Flight number
KL-1151

Destination
Oslo, Norway

Aircraft Registration
PH-EXB

Aircraft Type
Embraer ERJ-190

ICAO Type Designator
E190

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