Operational Procedures

Not quite. The correct answer is C.

Correct answer: C

• A. This is the uncorrected dry distance. It ignores that standing water lengthens the ground roll through reduced wheel braking and possible hydroplaning.
• B. This applies a 15 per cent wet-runway style addition instead of the contamination factor given in the stem. Contaminated-runway factors are supplied by the performance data, not a generic percentage.
• C. Correct: 1400 m multiplied by the given factor of 2.0 is 2800 m, the distance the crew must have available before committing to the approach.
• D. This divides instead of multiplies. A contamination factor always lengthens the required distance, it never shortens it.

Not quite. The correct answer is B.

Correct answer: B

• A. This treats the holdover time as a countdown to depart against rather than a guarantee that stops applying the moment conditions change or a new pre-take-off check is due; a fresh contamination check of the critical surfaces is still required before every take-off.
• B. Correct: holdover time is a guide to when re-treatment is likely needed, not a substitute for confirming the actual state of the wings and control surfaces immediately before take-off.
• C. Re-treatment may well be needed, but committing to it without first checking the surfaces skips the actual safety action, which is confirming whether contamination is present at all.
• D. Holdover tables key on more than temperature; re-reading temperature alone does not extend a table value or replace a physical check of the surfaces.