Royal Maroc B737 at Frankfurt on Jul 23rd 2016, three takeoffs for the price of one

Last Update: September 5, 2016 / 15:13:49 GMT/Zulu time

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Incident Facts

Date of incident
Jul 23, 2016

Classification
Incident

Flight number
AT-811

Aircraft Registration
CN-RNV

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

A Royal Air Maroc Boeing 737-700, registration CN-RNV performing flight AT-811 from Frankfurt/Main (Germany) to Casablanca (Morocco), was accelerating for takeoff from Frankfurt's runway 18 (length 4000 meters, 13,120 feet) when the crew rotated at too low a speed but controlled the pitch to avoid a tail strike. The aircraft finally lifted off a bit and settled back on the runway, became airborne for a larger hop in ground effect but unable to climb out and de-rotated settling down onto the runway again before the aircraft became airborne for a normal climb out. The aircraft continued to Casablanca for a safe landing.

At this time it remains unknown why the aircraft rotated early before sufficient airspeed was achieved to sustain a climb out of ground effect, an erroneous computation of takeoff performance (V speeds) as well as a premature takeoff rotation appear possible amongst other options.

The video (below) became viral all over the Internet. In response Royal Air Maroc tweeted a French statement in 5 parts translated by The Aviation Herald: "Following dissemination of false information about flight AT-811 of July 23rd, Frankfurt - Casablanca, we wish to clarify that Frankfurt tower advised the captain of our flight in question of possible wake turbulence as result of a simultaneous landing of an A330. As result the captain performed a maneouver to accelerate in order to achieve speeds which permitted safe takeoff."

According to video and radar data a Turkish Airlines Airbus A330-300, registration TC-JNI performing flight TK-1593 from Istanbul (Turkey) to Frankfurt (Germany), touched down on Frankfurt's runway 07R about one minute prior to the Royal Air Maroc Boeing 737-700 commencing takeoff. The final approach path to runway 07R crosses runway 18 about 960 meters/3150 feet from the runway 18 threshold (from where the 737 began takeoff roll) and about 770 meters/2500 feet from the usual takeoff position.

On Aug 30th 2016 the BFU responded to an inquiry by The Aviation Herald of Aug 25th 2016 stating, the BFU had neither received any notification by the crew, airline or airport involved nor by the person taking the video (see below) and became aware of the occurrence only through the release of the video into the public more than a months after the occurrence. The BFU argued that as result it will not be possible to establish sufficient facts and evidence needed for a detailed investigation, hence the BFU decided to refrain from initiating an investigation.

On Sep 5th 2016 The Aviation Herald received a series of high resolution photographs from ground observer Fitz-James showing the slats were clearly extended and the first rotation took place well past the extended center line of runway 07R, during first takeoff rotation there was a slight tailwind of less than 6 knots (according to a windsock visible).
Incident Facts

Date of incident
Jul 23, 2016

Classification
Incident

Flight number
AT-811

Aircraft Registration
CN-RNV

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

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