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Lufthansa 2904

Original report numbering: Original p. 9; page may span adjacent original pages. PDF rendering page 4.

Airbus A320 depending on oleo strut (shockabsorber) compression unlocked the use of ground spoilers and engine thrust reversers. The systems began to operate, the spoilers deployed to full angle (50°), thrust reverser system began to work and N1 of the
Open report transcription at PDF page 4Report on the Accident to Airbus A320-211 Aircraft in Warsaw on 14 September 1993

Lufthansa 2904

Original report numbering: Original p. 14; page may span adjacent original pages. PDF rendering page 9.

unlimited 14 1.6.3 Structure and operation of braking system Braking system consists of 1. Ground spoilers. If selected "ON", the ground spoilers will extend if the following "on ground" conditions are met: either oleo struts (shock absorbers) are compressed at
Open report transcription at PDF page 9Report on the Accident to Airbus A320-211 Aircraft in Warsaw on 14 September 1993

Lufthansa 2904

Original report numbering: Original p. 40; page may span adjacent original pages. PDF rendering page 35.

programme which subjects actuation of all braking devices to some specific conditions. Ground spoilers, when selected, will extend provided that either shock absorbers are compressed at both main landing gears (the minimum load to compress one shock absorber being 6300
Open report transcription at PDF page 35Report on the Accident to Airbus A320-211 Aircraft in Warsaw on 14 September 1993

Lufthansa 2904

Original report numbering: Original p. 44; page may span adjacent original pages. PDF rendering page 38.

manufacturer 4.2.1 Possibility should be analysed to introduce the emergency use of ground spoilers and thrust reversers independently of meeting the criteria imposed by aircraft logics. 4.2.2 The possibility should be considered to modify the thrust reverser system to
Open report transcription at PDF page 38Report on the Accident to Airbus A320-211 Aircraft in Warsaw on 14 September 1993