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Last updated: 3 December 2021
Estado:Final
Fecha:viernes 21 septiembre 2007
Hora:19:52
Tipo:Silhouette image of generic DH8D model; specific model in this crash may look slightly different
de Havilland Canada DHC-8-402Q Dash 8
Operated by:Augsburg Airways
On behalf of:Lufthansa Regional
Registración: D-ADHA
Numéro de série: 4028
Ańo de Construcción: 2000
Horas Totales de la Célula:13382
Motores: 2 Pratt & Whitney Canada PW150A
Tripulación:Fatalidades: 0 / Ocupantes: 4
Pasajeros:Fatalidades: 0 / Ocupantes: 68
Total:Fatalidades: 0 / Ocupantes: 72
Dańos en la Aeronave: Considerable
Consecuencias: Repaired
Ubicación:München-Franz Josef Strauss Airport (MUC) (   Alemania)
Fase: Aterrizaje (LDG)
Naturaleza:Vuelo Internacional Programado
Aeropuerto de Salida:München-Franz Josef Strauss Airport (MUC/EDDM), Alemania
Aeropuerto de Llegada:Florence-Peretola Airport (FLR/LIRQ), Italia
Número de Vuelo:LH4074
Descripción:
A DHC-8-402Q aircraft sustained substantial damage un a nosegear-up landing at München, Germany.
The aircraft, operating Lufthansa Regional flight LH4074 to Florence, Italy, returned to München when the nose landing gear could not be deployed in preparation for landing. Several attempts to recycle the landing gear proved fruitless. New attempts were made near München but these were also unsuccessful. Even the emergency procedure failed.
Finally a nose gear-up landing was carried out on runway 08R. The aircraft came to rest about 465 m after the nose contacted the runway.

Probable Cause:

Conclusions
The immediate causes of the accident were:
- Due to a vibration cracks developed and due to fretting a coil spring in the actuating mechanism for the nose landing gear doors broke.
- The fragments of the coil spring fell into the enclosed wheel well in the vicinity of the strut and jammed itself in the landing gear struts upon retraction of the nose gear.
- The jammed coil spring blocked the locking mechanisms of the nose landing gear in the retracted and locked position.
- The force required for releasing the blocked locking mechanisms could be applied to either the normal or with the emergency system.



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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from München-Franz Josef Strauss Airport to Florence-Peretola Airport as the crow flies is 504 km (315 miles).

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