A defence ministry report has revealed that only 29 of Germany’s 66 Tornado jets are airworthy.
It comes two days before German MPs are expected to vote in favour of military action against Islamic State (IS) militants in Syria.
Defence Minister Ursula von der Leyen has stressed that only six of the operational Tornado jets would be needed for the proposed mission.
A vote on the UK’s involvement takes place in parliament on Wednesday.
Germany decided to join the fight against IS after an appeal by French President Francois Hollande in the wake of the 13 November Paris attacks.
But the readiness of Germany’s armed forces has long been the subject of