29 May 1943
At 15.40 hours, the boat was attacked by the British Catalina aircraft FP183 (190 Sqdn RAF/V, pilot S/L J.A. Holmes) between Iceland and the Faeroes. The aircraft was hit by AA fire during the strafing attack, but dropped six depth charges that fell about 30 metres astern. They then exchanged some gunfire, but U-667 soon dived. The Catalina had been hit in the port engine and the hull and the co-pilot was slightly wounded by a shell splinter. The aircraft made it safely back to Sullom Voe. (Sources: Franks/Zimmerman)

19 Jul 1943
At 15.42 hours, the inbound boat was attacked by the British Liberator aircraft FL977 (59 Sqdn RAF/H, pilot F/L E.E. Allen, RCAF) in the Bay of Biscay. The port wing of the aircraft was hit by AA fire in the first attack run, so they broke off the attack, circled U-667 and exchanged gunfire. The Liberator then dropped a depth charge from 3300 feet to force the boat to dive, but it overshot by 75 yards and did not explode. At 16.33 hours, the next attack was made from low level, but the two depth charges missed ahead. AA fire hit the aircraft ten times and the port waist gunner was badly wounded, so the pilot decided to head for home. (Sources: Franks/Zimmerman)

24 Sep 1943
Shortly before dawn the boat fought off an attack by a Leigh Light equipped Wellington aircraft (179 Sqdn RAF/P, pilot Sgt A.W. Ellis) off Portugal. Neither side suffered any damage, but U-667 was on her way into the Mediterranean and the Allied aircraft were now alerted.

In the evening the boat was attacked by another Wellington (179 Sqdn RAF/D, pilot F/O A. Chiltern) and slightly damaged.

25 Sep 1943
At 03.09 hours, the boat fought off an attack by a British Wellington aircraft (179 Sqdn RAF/Q, pilot F/S R.W. Dix). Its depth charges hung up due to damage by AA fire and further hits in the port engine and the starboard wing forced the aircraft to return to base.

At 10.35 hours, U-667 was attacked by another Wellington (179 Sqdn RAF/R, pilot F/S D.J. McMahon) with six depth charges that fell close.

25 Sep 1943
Aircraft attack, aircraft shot down:British Wellington Mk.XIV (179 Sqdn RAF/F, pilot S/L G.H.M. Riddell)

At 22.18 hours, the boat was attacked by a Leigh Light equipped Wellington which was hit by AA fire during the attack run with depth charges. It was seen flying away with the light still switched on and later a SOS message was heard. The aircraft did not return from patrol and was reported missing with its crew of six.

26 Sep 1943
At 10.40 hours, the boat was located and attacked by yet another Wellington aircraft (179 Sqdn RAF/X, pilot F/O S.H. Nicholson) searching for the missing aircraft, but its depth charges exploded astern.

Shortly thereafter the Germans spotted two other aircraft identified as Beaufighters, but were in fact Hudsons. Hudson AE505 (233 Sqdn RAF/T, pilot F/O A.G. Frandson) and Hudson EW924 (48 Sqdn RAF/N, pilot F/O E.L. Ashbury) strafed the boat and fired rockets - both aircraft were damaged by AA fire and had to return to base. U-667 had finally to give up the attempt to break through to the Mediterranean and returned to base with extensive damage. Within 2 days the boat had experienced no less than 8 air attacks, shot down one attacker and damaged three others.

16 Apr 1944
The boat unsuccessfully attacked a "destroyer escort" from a hunter-killer group with a torpedo but was in turn hunted by same group for 12 hours before managing to slip away. (Sources: Blair, vol 2, page 510)

7 recorded attacks on this boat.