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Certificate include domestic air carriers, flag air carriers,
supplemental air carriers, scheduled helicopter operators, and commuter
air carriers.
Air Commerce - the intrastate, interstate, overseas, and foreign
carriage of persons or property for compensation or hire, including
carriage of mail, or the operation or navigation of aircraft in the
conduct or furtherance of a business or vocation.
Air Transportation - the interstate, intrastate, overseas, and foreign
carriage of persons or property by common carrier for compensation or
hire.
Commercial Operator - an operator other than air carrier, who conducts
operations in air commerce carrying persons or property for compensation
or hire. These operators are issued an Operating Certificate.
1. Airplanes with a passenger seating capacity of 20 or more or a
maximum payload of more than 6,000 pounds conduct operations under
Federal Aviation Regulations (FAR) Part 125.
2. Airplanes, with a passenger seating capacity of less than 20 and
a payload of less than 6,000 pounds, and rotorcraft conduct
operations under FAR Part 135.
3. Scheduled intrastate common carriage of aircraft with a
passenger seating capacity of 30 or less and a payload of 7,500
pounds or less, conduct operations under FAR Part 135. Aircraft
with a passenger seating capacity of more than 30 and a payload of
more than 7,500 pounds conduct operations under FAR Part 121.
Commuter Air Carrier - an operator who, under FAR Part 135, conducts
scheduled passenger carrying operations with a frequency of at least
five round trips per week on at least one route between two or more
points according to a published schedule, utilizing aircraft with a
passenger seating capacity of 30 or less and a maximum payload of 7,500
pounds.
Domestic Air Carrier - an operator who, under FAR Part 121, conducts
scheduled operations within the 48 contiguous states and the District of
Columbia, utilizing aircraft with a passenger seating capacity of more
than 30 or a payload of more than 7,500 pounds.
Flag Air Carrier - an operator who conducts scheduled operations under
FAR Part 121 to any point outside the 48 contiguous states and the
District of Columbia, utilizing aircraft with a passenger seating
capacity of more than 30 or a payload of more than 7,500 pounds.
Supplemental/Scheduled Cargo Air Carrier - an operator performing nonscheduled
passenger (charter) operations and scheduled or non-scheduled
all-cargo operations under FAR Part 121, utilizing aircraft with a
passenger seating capacity of more than 30 or a payload of more than
7,500 pounds.
Codes are listed below for each authorized type of operation.
DFG Domestic and Flag (Passenger/Cargo)
DOM Domestic (Passenger/Cargo)
SCO Supplemental (Cargo Only)
SUP Supplemental (Passenger/Cargo)
CMA Commuter (Passenger/Cargo)
ODA On-Demand Fixed Wing (Passenger/Cargo)
ODCF On-Demand Fixed Wing (Cargo Only)
CMR Commuter Rotorcraft (Passenger/Cargo)
ODR On-Demand Rotorcraft (Passenger/Cargo)
ODCR On-Demand Rotorcraft (Cargo Only)
DATA INFORMATION
The class of aircraft is shown in the upper left corner of the report
pages. The class of aircraft is the method of propulsion, i.e., turbine
(turbojet and turbofan), turboprop, reciprocating (air transport and
normal/utility), and helicopter turboshaft.
Aircraft and Engine Manufacturer and Model
Information is presented alphabetically by aircraft manufacturer code.
The aircraft models, and engine manufacturer and models are grouped
within each aircraft manufacturer category.
Air Carrier Designator
This column lists the unique designator code of the operator. A listing
of designators with the names of operators is also provided.
Number of Aircraft
This is obtained from the reporting document, AC Form 8320-1, Air
Carrier Aircraft/Engine Utilization Report.
Fleet Aircraft Time
This is the total number of hours flown for the reporting month. This
information is also obtained from AC Form 8320-1.
Daily Utilization Hours
The daily utilization hours represents the average daily flight time and
is calculated as the fleet aircraft time divided by the number of days
in the reporting month and rounded to the nearest hour.
Fleet Engine Hours
This is the total engine hours for the reporting month and is obtained
from AC Form 8320-1.
Engine TBO and Hot Section Inspection Period
The engine Time Between Overhaul (TBO) and Hot Section Inspection (HSI)
periods may be entered as hours, cycles, or as one of the following
programs.
1. Condition Monitoring (CON MON) - a maintenance process for items
　
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