As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: L ENG ANTI ICE VALVE CLOSED AFTER T/O AND WOULD NOT REOPEN. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LHR WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. ***SUPPLEMENTAL ACTION SECTION 4 AND 5: FOUND PUSHED BACK PIN AT CONNECTOR DM 30211A. REPLACED CONNECTOR IAW WDM 30-21-11.***(CLOSED)