"#REDIRECT  

 :I agree with using obsolescent in this case.  No one is suggesting that these aircraft were the latest technology only that they were still in use and hence not yet obsolete.  Also, it should be remembered that the stringbag continued in service throughout the war, even after its supposed replacement the Fairey Albacore, also a bi-plane, was withdrawn - in fact the last Swordfish to be constructed were delivered after the Albacore had been withdrawn from service. -   "