Hi, Something looks very off with ADIFR for flights 15 and 16. As a result, we have no vertical wind data.
I see that you've blown out the nose holes. Could something still be stuck or plugged? Is there any chance a fitting might be askew?
In fact, I just looked at whether there is a pressure dependence to ADIFR (meaning does it change as the plane changes altitude) and there is! So it looks like we've introduced a leak into the system.
3 Comments
David Allbee
Flight Tech - D. Allbee
24Sep2019
Taxi - 1208
Takeoff - 1211
Landed - 1732
Ran Auto A/D Cal - No significant changes
Omega set point returned to -30°C (TRSTB)
1143 - Cycled Nose/MPDB Control Switch
DPR still in Service Mirror mode after being blown out
1218 - During ascent, 10um end diode voltages low (~0.2). Cycled power on probe 3x.
1229 - Cycled power on RWO DSM and each RW circuit breaker, trying to recover 10um 2D-C
1253 - 10um end diode voltages returned to acceptable levels on their own.
DPR following DP_VXL but data does not look as it normally does. Wavier than usual. DPR may need cleaning.
End Diode Voltages on both 2D-C probes fell below limits during descent.
1728 - Thawed (just before landing)
Post Flight Maintenance
Blew out all Nose pressure lines
Cleaned 2D mirrors (10um and 25um). Nothing visible on mirrors prior to cleaning...
Cleaned FWD Camera lens, VISB dome, and RSTB lens.
Unknown User (abailey)
Hi, Something looks very off with ADIFR for flights 15 and 16. As a result, we have no vertical wind data.
I see that you've blown out the nose holes. Could something still be stuck or plugged? Is there any chance a fitting might be askew?
In fact, I just looked at whether there is a pressure dependence to ADIFR (meaning does it change as the plane changes altitude) and there is! So it looks like we've introduced a leak into the system.
Thanks for double checking!
Unknown User (abailey)
You might try checking the top port of ADIFR first for leaks, cracks, etc.