Incident Overview

Date: Tuesday 25 February 1969
Aircraft Type: Fokker F-28 Fellowship 1000
Owner/operator: LTU, lsf Fokker
Registration Number: PH-ZAA
Location: Hannover-Langenhagen Airport (HAJ) – ÿ Germany
Phase of Flight: Take off
Status: Substantial, repaired
Casualties: Fatalities: 0 / Occupants: 11
Component Affected: Aircraft wing (right side), flaps, and ailerons.Aircraft wing (right side), flaps, and ailerons.
Category: Accident
An F-28 aircraft attempted a demonstration flight from Hannover Airport, Germany, on a runway 09L takeoff. The aircraft rotated to approximately 12ø and lifted off, but immediately rolled to the right with a bank angle of 25ø. The pilot was unable to correct the roll, and the aircraft did not accelerate or descend until it struck the runway. The aircraft then rolled to the left and right, and the pilot rejected the takeoff. The aircraft came to rest approximately 50 meters to the right of the runway and 1975 meters from the takeoff roll start point. The stick-shaker activated three times during flight. The incident was characterized by icing conditions, including temperature of -1øC and relative humidity near 100%, visibility of 3 km in snow, and precipitation in the form of light snow and undercooled drizzle. Improper flight preparation and improper operation of flight controls were identified as potential contributing factors.An F-28 aircraft attempted a demonstration flight from Hannover Airport, Germany, on a runway 09L takeoff. The aircraft rotated to approximately 12ø and lifted off, but immediately rolled to the right with a bank angle of 25ø. The pilot was unable to correct the roll, and the aircraft did not accelerate or descend until it struck the runway. The aircraft then rolled to the left and right, and the pilot rejected the takeoff. The aircraft came to rest approximately 50 meters to the right of the runway and 1975 meters from the takeoff roll start point. The stick-shaker activated three times during flight. The incident was characterized by icing conditions, including temperature of -1øC and relative humidity near 100%, visibility of 3 km in snow, and precipitation in the form of light snow and undercooled drizzle. Improper flight preparation and improper operation of flight controls were identified as potential contributing factors.

Description

The crew of an F-28 aircraft attempted to take off from runway 09L on a demonstration flight from the Hannover Airport, Germany. At rotation speed, the captain rotated the aircraft to about 12ø, and the aircraft lifted off. It immediately rolled to the right to an angle of bank of about 25ø, which could not be corrected by aileron control . The aircraft did not accelerate and descended until the right wing tip struck the runway. The aircraft rolled to the left and then to the right, and the captain rejected the takeoff . The aircraft came to rest approximately 50 m (164 feet) to the right of the runway and 1975 m (6480 feet) from where the takeoff roll commenced. The stick-shaker had activated three times while the aircraft was airborne. The only damage to the aircraft was to the right wing, the flap, and the aileron. There were no injuries. The aircraft had been parked for about five hours preceding the attempted flight . During this time, the temperature was between -1 and -2øC, the relative humidity was near 100 per cent, there was overcast cloud based at 700 to 900 feet, and there was precipitation in the form of light snow and undercooled drizzle . At takeoff time, the temperature was -2øC and the visibility was 3 km in snow. Causal factors: improper flight preparation, improper operation of flight controls; icing conditions.

Source of Information

https://www.hdekker.info/Nieuwe%20map/1969.htm#PH-ZAAhttps://www.hdekker.info/Nieuwe%20map/1969.htm#PH-ZAA

Primary Cause

Improper flight preparation and improper operation of flight controls.Improper flight preparation and improper operation of flight controls.

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