Vulcan Alleged Barrel Roll being investigated

[NutLoose]

Originally Posted by ORAC

Define the "aerobatics" they were unauthorised do to do.

The CAA have no defined limits, if you accept the standard any "sharp" manoeuvre or exceeding 30 AOB, then their standard display with wing overs for the last couple of years exceeds it. So, again, give me a precise definition of the limits they maintained for their display season they suddenly exceeded - such that the CAA could credibly take action on - without opening themselves out to scrutiny ( including possible legal liability for Shoreham etc).

IMHO the CAA will maintain a discrete silence.....

So what are these then in chapter 6 below? They define the CAA aerobatic manoeuvres, which of course it cannot do under its permit coverage.
They checked the Vulcan was cleared for its wing overs after Shoreham as it was on the VTTS website saying as much from the Chief Pilot..
Perhaps they should have asked a Display Authorisation Evaluator (DAE)


http://www.caa.co.uk/docs/33/CAP%204...l%20events.pdf

Chapter 6
Part A - Skill levels for authorisation of aerobatic displays
Standard

6.1 Standard aerobatic displays

 Lines – Mainly horizontal or up to 45° climbing/diving lines in normal flight.
 Turns – Turns through 90° to 360° in normal flight.
 Spins – Erect Spins of one turn, with entry and exit in normal flight.
 Stall Turns – Stall turns with normal entry and exit.
 Loops and Eights – Inside circular loops with normal entry and exit.
 Combinations – Half an inside loop followed by a half roll (‘Roll off the Top’.) Five eighths of an inside loop combined with a half roll on diving exit Line (‘Half Cuban 8’). 45° climbing line followed by a half roll and pull through to level flight (‘Reverse Half Cuban 8’)
 Rolls – Slow, aileron or barrel rolls on horizontal line, or where combined with a combination manoeuvre listed above, on the diving or climbing line.
Intermediate

6.2 Intermediate aerobatic displays


 Lines – Mainly horizontal or 45° climbing or diving Lines in normal or inverted flight.
 Angles – Change of flight path between lines normally through angles of not more than 90°.
 Turns – Turns through 90° to 360° in normal flight, starting and finishing in normal or inverted flight.
 Spins – Erect spins of one or two turns with entry and exit in normal flight.
 Stall Turns – Stall turns with normal entry and exit, with or without half rolls in the vertical climb and/or dive.
 Loops and Eights – Inside half loops, loops and ‘Cuban 8s’ with normal entry and exit. Loops may be circular or square.
 Combinations – Half to five eighths of an inside loop may be combined with entry or exit lines and angles. Quarter or half rolls may be included on the lines.
 Rolls – By definition these are inserted in lines or other figures. Slow or aileron rolls, two point or four point rolls, with between a quarter and one rotation flown in any one of the positions referred to above. Positive flick rolls.

Advanced

6.3 Advanced aerobatic displays


 Lines – Horizontal, climbing and diving in normal flight and vertical Lines climbing and diving. All lines may be flown with or without rolls.
 Angles – Flight through any angle between such lines, with a change of flight path typically between 45 and 135°.
 Turns and Rolling Turns – Turns through 90 to 360° starting and finishing in normal or inverted flight, with or without rolls, with rotation in the same or opposite direction to the turn.
 Spins – Normal and Inverted spins with entry and exit in normal or inverted flight.
 Stall Turns – Stall turns with normal or inverted entry and exit with or without rolls in the vertical climb and/or dive.
 Loops and Eights – Inside and outside half loops, loops and horizontal eights (‘inside’ + ‘outside’), with normal or inverted entry and exit. Loops may be circular, square, diamond or eight–sided. Rolls may be inserted in loops and eights.
 Combinations of Lines, Angles, Loops and Rolls – Half to three–quarters of an inside or outside loop may be combined with entry or exit lines or angles and rolls may be included on the lines.


CAP 403 Chapter 6: Part A - Skill levels for authorisation of aerobatic displays February 2015 Page 60


 Rolls – By definition these are inserted in lines or other figures. Slow or aileron rolls, 2 point, 4 point or 8 point rolls, positive or negative flick rolls with typically between a quarter and one rotation flown in any of the positions referred to above.

Unlimited

6.4 Unlimited Aerobatic Displays - By definition, there are no restrictions on aerobatic figures, including autorotative figures which a pilot flying Unlimited category aerobatics may perform.


NOTE: Although based on FAI skill levels, these aerobatic DA skill levels have been adjusted to reflect the normal display aerobatic environment. They should not be confused with the FAI skill levels.