USAFR C-130 'J' data files
The United States Air Force Reserve 53rd WRS records flight
level parameters at one second intervals during reconnaissance
missions into tropical disturbances. Each month an Air Force
Quality Control officer will review all of the data collected
during the previous month, and produce reduced ten second files
for each flight. However, sometimes this data is retained at
the one second interval.
These files are in ASCII. They consist of several header lines
identifying the mission ID, start time and date for the data,
software and file version numbers, and tail number of the aircraft
in use. This is followed by a text line conatining headers identifying
the parameter recorded in each column. Below is listing of those
headers along with a full parameter name and the units that the
data was recorded in.
USAF data headers Current
Header
| Description
| Units
|
GMT Time
| Time of Day (UTC)
| Hours:Minutes:Seconds
|
ADR
| Air Density Ratio
| none
|
AOA
| Angle of Attack
| degrees
|
BCA
| Baro-Corrected Altitude
| millibars
|
BSP
| Baroset Pressure
| millibars
|
CAS
| Calibrated Air Speed
| knots
|
CSP
| Corrected Static Pressure
| millibars
|
DPR
| Dynamic Pressure
| millibars
|
GPSA
| GPS Altimeter
| meters
|
GS
| Ground Speed
| knots
|
IA
| Inertial Altimeter
| meters
|
ISP
| Inertial Static Pressure
| millibars
|
LAT
| Latitude
| degrees
|
LON
| Longitude
| degrees
|
PA
| Pressure Altitude
| meters
|
PITCH
| Pitch angle
| degrees
|
PR
| Pressure Ratio
| none
|
PT
| Total Pressure
| millibars
|
RA
| Radar Altitude
| meters
|
ROLL
| Roll angle
| degrees
|
SS
| Side Slip
| degrees
|
TA
| Corrected Static Air Temperature
| °C
|
TAS
| True Air Speed
| knots
|
THD
| True Heading
| degrees
|
TRK
| Track
| degrees
|
TT
| Total Temperature
| °C
|
VE
| Velocity East
| knots
|
VN
| Velocity North
| knots
|
VV
| Vertical Velocity
| knots
|
WDIR
| Wind Direction
| degrees
|
WSPD
| Wind Speed
| knots
|
TD
| Dew Point Temperature - Digital
| °C
|
RR
| Rain Rate (SFMR)
| mm/hr
|
SWS
| Surface Wind Speed (SFMR)
| knots
|
CC
| Course Correction
| degrees
|
DVAL
| Deviation Value
| meters
|
GA
| Geopotential Altitude
| meters
|
HSS
| Height of Standard Surface
| meters
|
SLP
| Sea Level Pressure
| millibars
|
WD
| Wind Direction (calculated)
| degrees
|
WS
| Wind Speed (calculated)
| knots
|
Valid Flags
| Parameter validity flags
| binary
|
Source Tags
| Data Source Tags
| hexidecimal
|
SATCOM
| Satellite Communications status
| binary
|
ARC210
| Motorola ARC-210 Radio status
| binary
|
AD
| Analog/Digital Card status
| binary
|
DDPH
| Digital Dew Point Hygrometer status
| binary
|
1553
| Main aircraft data bus
| digital
|
SFMR
| Stepped Frequency Microwave Radiometer output
| hexidecimal
|
The order of the parameters has varied over the years. Not all
parameters listed above are available in previous versions. In
addition some parameters are listed in previous versions which are
no longer available and they are listed below.
USAF data headers Previous
TDA
| Dew Point Temperature - Analog
| °C
|
TDD
| Dew Point Temperature - Digital
| °C
|
Return to HRD Homepage
|