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https://ukdefenceforum.net/viewtopic.php?f=43&t=176&start=225
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There are 14 a/c with the RAF at present increasing to 18 a/c as the year progresses. The aircraft are receiving a number of upgrades and will continue to do so over the next year or so.
The a400 can and is now cleared for parachuting and is currently testing 16 tonne single load drops. The issues identified with long sticks of parachutes dropping from both doors simulatiously is not unique to a400m indeed the very same issues affect c17 and c130.
The a400m can actually operate out off all the same locations as c130 Hercules in fact the a400m will operate out of landing sites with softer ground than c130, thank to German specified cbr specs and a much better landing gear. RAF have been conducting landings down the beach recently.
There is an issue refuelling helicopters and testing is in place to offer a solution should that capability happen it will most likely require the receiver to remain plugged in longer than had been planned,
Why have we retained c130. Well we were always supposed to a400m was only supposed to replace half the c130 the other half being replaced by c130js. Why mainly cost we don't have the funds to replace all the c130s with a400m and it takes time to clear all the SF profiles and gear which is currently cleared on c130. Possible osprey replacement for c130 in the future may be of interest.
As for turbo jets / props. Props are more efficent if you plan to fly low level tactic sorties also FOD is a real issue with jet engines in unprepared surfaces. The abbresive materials on the compressor blades seriously degrade engine life expectancy. It's one of the reasons why c17 spends a week in the hanger for a service every time it conducts such a landing."