FAQ - FREQUENTLY ASKED QUESTIONS
FLEET USAGE REPORT
2) HOW DO YOU READ THE REPORT?
4) WHERE IS XYZ REGIONAL AFFILIATE?
5) THE AIRCRAFT COUNT DOES NOT MATCH THIS OTHER SOURCE?
8) THE REPORTED TYPE CHANGES FROM ONE MONTH TO ANOTHER?
1) I CAN'T SEE THE DATA?
This data was previously available to MORE TIER and above, but effective July 2026 it was moved up to PLUS TIER and above to to the inclusion of ADSB data to improve the report quality to add international data and more recent fleet counts.
2) HOW DO YOU READ THE REPORT?
Airline Totals:
Airline, #ofAircraft, (ChangeVsLastMonth), @DomesticUtilizationHours/Day, (ChangeVsLastMonth)
Each Fleet Type:
A/CType, (Operator), #ofTails, (ChangeVsLastMonth), @DomesticUtilizationHours/Day, (ChangeVsLastMonth)
3) WHERE IS THIS DATA FROM?
As of July 2026 posts, the data is created from ADSB data which covers any aircraft that flies to/from/through the L48 States and Hawaii. Any aircraft that does not operate in this zone is not included. Previously it was from DOT/FAA, Domestic ONLY. International was not available for the prior iteration.
4) WHERE IS XYZ REGIONAL AFFILIATE?
All data available is listed. Missing carriers are not reporting data. Any regional operation outside the zone of the report is excluded.
5) THE AIRCRAFT COUNT DOES NOT MATCH THIS OTHER SOURCE?
This is a count by unique tail number of aircraft in service during the month. Prior to July 2026 it was DOMESTIC flights only, but from July 2026 it includes any aircraft operating the L48 + Hawaii airspace of the United States. If an aircraft does not fly during the month it does not count. It could be in maintenance or parked.
6) UTILIZATION SEEMS LOW?
Prior to July 2026 data was domestic only and that reduced utilization below other sources, but from July 2026 onward it should include any flight passing through the United States L48 + Hawaii zone.
7) WHAT DOES ZZZ/MISSING MEAN?
After July 2026 a missing type typically means the ADSB record showed no aircraft type. Prior to July 2026, the FAA provides a database of tail numbers and types. This database can be out of sync from operational data causing MISSING to appear.
8) THE REPORTED TYPE CHANGES FROM ONE MONTH TO ANOTHER?
This occurred prior to July 2026, but should not be an issue going forward. In the past, 73H and 738 both represent 737-800 models and there was not consistency in reporting between these types and aircraft might move from one category to another.
9) WHAT CHANGES WERE IMPLEMENTED IN JULY 2026?
This report changed from using DOT OnTime data to using Live ADSB data. That allowed inclusion of any flight that passes through the U.S. L48 + Hawaii zone with a U.S. airline. We were able to add additional airlines as a result. The fleet count is now much more accurate through inclusion of international flights arriving and departing the L48 + Hawaii. Aircraft which only operate outside the L48 + Hawaii will still not be recorded. A "tree map" was added to the bottom to show fleet count visually. The acquisition of new ADSB data and its accompanying cost resulted in the new version of this report moving to PLUS TIER or higher.
10) WHAT IS THE GRAPH AT THE BOTTOM?
From July 2026 a "tree graph" was added to the bottom to show fleet sizes by carrier.