For 'Danny42C' - yes 'half plus 2' sounds right. Had an e-mail stating the CMDR was at 12K so that would have been the turn inbound height. But he was at 2,000 feet over water descending turn into water I guess. And yes the descent was at steady RPM, 250 knots sounds right and very fast.
On previous page this thread 'RetiredBA/BY' enquires about Goblin engine and Vampire types. The quote was from the RAAF Mk.35 & Mk.35A Flight Manual - I would have to check if it was a variant of the T-11 but I guess it was. The RAN had some T-11venses - they were the ones with the instruments in different places along with the dual AH/AIs.
The RAAF manual says the engine is a
Goblin Mk35:
"Goblin Modification 1087
7. In an endeavour to eliminate the critical vibration ranges of 7,800-8,650 rpm and 8,800-9,200 rpm in Goblin engines, a modified impellor and diffuser assembly was introduced. This modification 1087 has been incorporated in approximately 90 out of 150 engines.
8. Since the incorporation of this modification, a considerable number of minor defects and three major accidents overseas have led to extensive investigation and the following restrictions, which were necessary because of the impellor vane flutter which resulted in cracking and break-up of the impellor back plate, were imposed:-
(a) Operation in the following rpm ranges is prohibited except when passing through the range when changing power:-
(i) 10,350 to 10,650.
(ii) More than 10,350 above 25,000 feet.
9. It is emphasized that failure to adhere to these limitations could cause impellor failure in a very short time.
10. The rpm ranges 7,800-8,650 and 8,800-9,200 should be avoided whenever possible. They must never be used for cruising or prolonged descent."