Citation 525, D-ITAN and Boeing 777 300ER, TC-JJA, 27 July 2009

• From: Air Accidents Investigation Branch
• Published: 10 December 2014

• Category: Commercial - fixed wing
• Report type: Bulletin - Field investigation
• Date of occurrence: 27 July 2009
• Aircraft type: Citation 525 and Boeing 777 300ER
• Location: London TMA (terminal control area)
• Registration: D-ITAN and TC-JJA

Citation 525, D-ITAN and Boeing 777 300ER, TC-JJA

Summary:

The crew of D-ITAN were cleared to depart London City Airport on a DVR 4T SID, which required them to climb initially to 3,000 ft amsl. They read back their cleared altitude as 4,000 ft, an error that was not noticed by the Tower controller. At about the same time, TC-JJA was cleared to descend to an altitude of 4,000 ft while turning onto a southerly heading prior to intercepting the ILS for Runway 27R at Heathrow Airport. D-ITAN climbed through 3,000 ft while turning right and passed TC-JJA on a nearly reciprocal heading approximately 0.5 nm away and 100 to 200 ft below. TC-JJA generated three TCAS RAs in short succession but the aircraft did not follow the commands. D-ITAN was unable to generate RAs. The crew of D-ITAN saw TC-JJA in time to take effective avoiding action. Five Safety Recommendations are made.

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Citation 525, D-ITAN and Boeing 777 300ER, TC-JJA 09-10.pdf (1,107.59 kb)

Published 10 December 2014