Nimrod inquiry delays under fire
Angus Robertson said the wait for the Ministry of Defence inquiry and a coroner's inquest was a "disgrace".
Dates have still to be set for the publication of the board of inquiry's findings and a coroner's inquest into the deaths.
The Nimrod MR2 came down near Kandahar on 2 September last year, killing 12 crew from 120 Squadron based at RAF Kinloss in Moray. A Royal Marine and an army soldier also died. The tragedy was the biggest loss of British military personnel since the war on terror began.
Mr Robertson said:
"Everybody's thoughts are with the families and friends of those who lost their lives. They are having to wait far too long to receive answers to many questions. A
12-month wait is a disgrace.
"Publication dates have been put back and put back and the Ministry of Defence should get on with it."
A Ministry of Defence spokesman said: "The RAF apologises for the delay
. The findings will be released as soon as possible."
A Ministry of Justice spokesman said all inquests took "some time".