CASA 148/04 Directions under subregulations 235 (2) and 215 (3) Take-offs on wet runways by DHC 8-202 aircraft (Cth)

INSTRUMENT NUMBER: CASA 148/04

CIVIL AVIATION ACT 1988

CIVIL AVIATION REGULATIONS 1988

DIRECTIONS UNDER SUBREGULATIONS 235 (2) and 215 (3)

TAKE-OFFS ON WET RUNWAYS BY DHC 8-202 AIRCRAFT

I, BRUCE ROBERT GEMMELL, Deputy Chief Executive and Chief Operating Officer, a delegate of CASA:

(a)under subregulation 235 (2) of the Civil Aviation Regulations 1988 (CAR 1988), give the directions in Schedule 1 setting out the manner of determining, for a proposed flight, the maximum weight that the gross weight of DeHavilland Canada DHC 8-202 aircraft operated by Surveillance Australia Pty Ltd (the operator) ACN 050 021 308 must not exceed at take-off on a wet runway; and

(b)under subregulation 215 (3) of CAR 1988, direct that the operator must include in its operations manual information, procedures and instructions relating to take-offs in accordance with these directions.

This instrument starts having effect on gazettal and stops having effect at the end of March 2006.

SCHEDULE 1

DIRECTIONS

1. In this Schedule:

V₁ (wet) means a reduced V₁  (take-off decision speed) established for use on a wet runway.

wet runway means a runway that:

(a)is covered by surface water not more than 3mm deep, or by slush or loose snow equivalent to surface water not more than 3 mm deep); or

(b)has sufficient moisture on the surface to cause it to appear reflective, but without significant areas of standing water.

1. In the case of a wet runway, the operator or pilot in command may calculate the accelerate-stop and take-off distances by the application of data relating to the use of a V₁ (wet) set out in the manufacturer’s flight manual for the DHC 8-202 aircraft and, in particular, Supplement No. 51 titled “Supplementary Performance Information for Take-Offs on Wet Runways”.

1. An operator or pilot in command must not use a V₁ (wet) unless it complies with the following requirements:

(a)it must be less than the V₁ (take-off decision speed) appropriate to a dry runway but not less than the minimum control speed on the ground (V_mcg );

(b)in the event of an engine failure recognised at V₁ (wet), the lowest point on the aircraft must be at a height not less than 15 feet above the ground at the end of the runway.

1. Accelerate-stop and take-off distances established in accordance with clause 2 may be used under subparagraph 4.1 (a) of section 20.7.1B of the Civil Aviation Orders (CAOs) as if established in accordance with subsection 6 of section 20.7.1B of the CAOs.

1. On a wet runway, the take-off weight must not exceed that permitted on a dry runway:

(a)under the same conditions of pressure altitude and ambient temperature; and

(b)with the take-off distance available calculated to take account of clause 6.

1. For the purposes of paragraph 5 (b), the take-off distance available on a wet runway must not include clearway.

1. These directions are taken to modify directions set out in subsections 4 and 6 of section 20.7.1B of the CAOs.

[Signed B. Gemmell]

Bruce Gemmell

Deputy Chief Executive and

Chief Operating Officer

25 May 2004