B767-300 and 300 ER
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Communication Breakdown
Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Procedure; Human Factors
My schedule included flights into ZZZ on [multiple days.] Although I had never operated into ZZZ myself before; I had seen the trip in our [dispatch package] many times. Yesterday; I was informed that ZZZ was designated as a Regular airport for the B757 but only an Alternate airport for the B767 in our Ops Specs. We operated the B767 into ZZZ for three flights before this oversight was found and [Company] had the designation changed to R for the B767. I had always thought of the Ops Specs as something to refer to if the 'plan changed.' This was a great lesson for me to see the importance of referring to the Ops Specs for every flight even those built into [Company's dispatch packages]. It would be helpful to include pertinent information in our [briefing] to save time.
Aircraft X has scheduled operations into ZZZ on [multiple days]. I have operated into ZZZ prior to this and was familiar with the operation. The legs flown into ZZZ during this period were operated as scheduled. Upon receiving an update to the Ops Specs; upgrading ZZZ from an alternate to a regular airport for the B767; I was alerted that it had previously not been a regular airport for the B767. Having already operated a B757 into ZZZ and consistently operating both B757 and B767 into multiple airports I did not check Ops Spec to ensure ZZZ was a regular airport for both B757 and B767. An added section to the [briefing] listing the aircraft types and if the airport is a regular or alternate would be an easier way for crews to access this information prior to a flight. In addition; when lines are built there should be a requirement to ensure the aircraft scheduled for the flight is legal to operate.
B767 flight crew reported landing at an airport not authorized in the company Ops Specs.