29 May 1943
15.40 hrs, between Iceland and the Faeroes: the boat was attacked by British Catalina aircraft FP183 (RAF Sqdn 190/V, pilot S/L J.A. Holmes) . The aircraft was hit by AA fire during a strafing run, but dropped six depth charges that fell approx. 30 metres astern. More gunfire was exchanged but, U-667 soon dived. The Catalina was hit in the port engine and hull, and the co-pilot slightly wounded by a shell splinter, but reached base at Sullom Voe and landed safely. (Sources: Franks/Zimmerman)

19 Jul 1943
15.42 hrs, Bay of Biscay, inbound: the boat was attacked by British Liberator aircraft FL977 (RAF Sqdn 59/H, pilot F/L E.E. Allen, RCAF). The aircraft broke off the first attack after being hit by flak in the port wing, then circled U-667 and exchanged gunfire. It then dropped a depth charge from 3,300 feet to force the boat to dive, which overshot by 75 yards and did not explode. At 16.33 hrs, the next attack was made from low level, but the two depth charges released fell ahead and missed. After the aircraft had been hit by flak ten times and the port waist gunner badly wounded, the pilot decided to return to base. (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 from a British Wellington (RAF Sqdn 179/Q, pilot F/S R.W. Dix). Its depth charges hung up due to flak damage and further hits in the port engine and starboard wing forced the aircraft to return to base.

At 10.35 hours, another Wellington (Sqdn 179/R, pilot F/S D.J. McMahon) dropped six depth charges that fell close.

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

22.18 hrs, SW of Cape St Vincent, Portugal: After being hit by flak while dropping depth charges, the Wellington was seen to fly away with the Leigh Light still switched on, and later an SOS message was heard. It did not return from patrol and was reported missing with its crew of six.

26 Sep 1943
10.40 hrs, 75 miles SW of Cape St Vincent: the boat was located and attacked by yet another Wellington from179 Sqdn (X for X-Ray, pilot F/O S.H. Nicholson) searching for the missing Wellington, but the depth charges exploded astern.

The Germans sighted two other aircraft shortly afterwards identified as Beaufighters, but which were in fact Hudsons. Hudsons AE505 (RAF Sqdn 233/T, F/O A.G. Frandson) and EW924 (Sqdn 48/N, F/O E.L. Ashbury) strafed and fired rockets, but were both forced to return to base by flak damage. U-667 was finally forced to give up her 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, shooting down one attacker and damaging 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.