1. The due observance and fulfillment of the terms, conditions and endorsements of this policy should be a condition precedent to any liability of the Underwriters to make any payment under this policy.
2. The insured should at all times use due diligence and do and concur in doing everything reasonably practicable to avoid or diminish any loss hereon.
3. The Insured should comply with all air navigation & Airworthiness orders and requirements issued by any competent authority affecting the safe operation of the Aircraft and should ensure that :
a. The Aircraft is airworthy at the commencement of each flight.
b. All log books and other records in connection with the Aircraft which are required by any official regulation in force from time to time should be kept up to date and should be produced to the Underwriters or their agents on request.