Article 150 Revocation of article 148 direction when validity of certificate of airworthiness affectedI1
United Kingdom
If an aircraft has been prohibited from taking off pursuant to article 148 and—
(a)
the safety deficiency affects the validity of the certificate of airworthiness of the aircraft; and
(b)
the Department has granted the operator of the aircraft an exemption from the requirement that the aircraft must have a valid certificate of airworthiness,
an authorised person must not revoke a direction issued pursuant to article 148 without first being satisfied that the operator has obtained permission for the flight from all States over which it is intended to fly the aircraft.