B-200 (UC-12B) - LARC 06/24/21

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Flight Number: 
Activate Flight 78 (Researcher #87) (Update each flight)
Payload Configuration: 
HSRL II/RSP
Nav Data Collected: 
No
Total Flight Time: 
3.5 hours
Flight Segments: 
From:KLFITo:KLFI
Start:06/24/21 12:23 Z Finish:06/24/21 15:53 Z
Flight Time:3.5 hours
Log Number:21B005PI:Armin Sorooshian
Funding Source:Barry Lefer - NASA - SMD - ESD Earth Venture Suborbital-3 Program
Purpose of Flight:Science
Miles Flown:690 miles
Comments:Planned as a UC-12 double flight day; cooperative flight with the HU-25. Planned route: KLFI ZIBUT KENDA JENYY ACK KPVD. Planned as a check on remote refueling ops. UC12 takeoff from runway 08 after HU-25. Good ATC departure and climb to FL280. During the climb the aircraft generators showed signs of significant load sharing fluctuations (problem has been noted on previous flights). At several points the left generator actually dropped to zero and the right generator warning light came on (an indication that the rt Gen Control Unit is dropping the rt generator offline to project the system). Discussions regarding contingency planning started immediately. The system continued to fluctuate for a while then eventually stabilized to acceptable levels (as it has done in recent flights). This allowed a decision to continue the research mission but based on the increased severity of fluctuations and the several drops, the decision was made to not continue with the planned refueling stop at KPVD. A amended clearance for ZIBUT ISLES ZIBUT ATLIC KLFI was requested and given. ISLES instead of KENDA was a research request. Profile up to ISLES and back to ZIBUT was nominal. Approaching back toward ZIBUT ATC advised that Tanker operation in W-387 would preclude transit at FL280. We were offered FL290 or FL260. We chose FL260 based on the presence of Cirrus clouds near ZIBUT which looked to be around FL290. Once handed to Giant Killer, we were told to descent to FL250 then FL240 then FL180 due to tanker ops. During the descent we requested and were given a clearance into W-72 allowing us to remain at FL240. The HU25 hugged the W-72/W-387 boundary. We had some discussion with Giant Killer on the miscommunications between them and NY. GK did a nice job of treading us through the rest of W-72 and out at ATLIC at FL240 allowing for the best research profile under the circumstances. Aircraft coincidence good throughout the flight (Offset laterally during the W-72 leg). About 30 kt headwind headed west so HU25 pulled slightly ahead on return leg. Proceeded to ATLIC for the final sonde drop and the descent into Langley. ATC gave north and west vectors for a visual approach to Runway 08. Normal landing at KLFI runway 08. 4x dropsondes deployed; Zibut EB, ISLES turn point, 1/2 to ZIBUT WB, ATLIC. Crew was Jamison, Wusk, Shingler. Second flight of day scrubbed to allow for aircraft troubleshooting.
Flight Hour Summary: 
21B005
Flight Hours Approved in SOFRS200
Total Used180
Total Remaining20
21B005 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
01/20/21Activate Flight 33Science33197600
01/29/21Activate Flight 34Science36194700
02/03/21Activate Flight 35Science3.39.3190.7700
02/10/21Activate Flight 36Science3.713187670
02/20/21Activate Flight 37 (Researcher #46)Science3.316.3183.7600
02/21/21Activate Flight 38 (Researcher #47)Science420.3179.7650
03/04/21Activate Flight 39 (Researcher #48)Science3.123.4176.6620
03/05/21Activate Flight 40 (Researcher #49)Science3.526.9173.1706
03/05/21Activate Flight 41(Researcher #50)Science3.330.2169.8650
03/08/21Activate Flight 42(Researcher #51)Science3.333.5166.5680
03/09/21Activate Flight 43(Researcher #52)Science3.436.9163.1708
03/12/21Activate Flight 44/45(Researcher #53/54)Science3.440.3159.7700
03/12/21Activate Flight 44/45(Researcher #53/54)Science3.543.8156.2700
03/20/21Activate Flight 46 (Researcher #55)Science3.447.2152.8705
03/23/21Activate Flight 47 (Researcher #56)Science4.151.3148.7704
03/29/21Activate Flight 48 (Researcher #57) (Update each flight)Science3.955.2144.8767
03/30/21Activate Flight 49 (Researcher #58) (Update each flight)Science3.458.6141.4712
03/30/21Activate Flight 50 (Researcher #59) (Update each flight)Science3.662.2137.8797
04/02/21Activate Flight 51 (Researcher #60) (Update each flight)Science2.664.8135.2710
04/02/21Activate Flight 51 (Researcher #61) (Update each flight)Science4.769.5130.5710
05/12/21Activate Flight 52 (Researcher ICF) (Update each flight)Science1.370.8129.2250
05/13/21Activate Flight 53 (Researcher #62) (Update each flight)Science3.774.5125.50
05/14/21Activate Flight 54/55 (Researcher #63/64) (Update each flight)Science3.778.2121.8730
05/14/21Activate Flight 54/55 (Researcher #63/64) (Update each flight)Science3.581.7118.3720
05/15/21Activate Flight 56 (Researcher #65) (Update each flight)Science3.585.2114.80
05/18/21Activate Flight 57 (Researcher #66) (Update each flight)Science3.688.8111.2720
05/19/21Activate Flight 58 (Researcher #67) (Update each flight)Science3.492.2107.8710
05/19/21Activate Flight 59 (Researcher #68) (Update each flight)Science3.495.6104.4720
05/20/21Activate Flight 60 (Researcher #69) (Update each flight)Science3.899.4100.6710
05/21/21Activate Flight 61 (Researcher #70) (Update each flight)Science3.610397750
05/21/21Activate Flight 62 (Researcher #71) (Update each flight)Science3.3106.393.7710
05/25/21Activate Flight 63 (Researcher #72) (Update each flight)Science3.4109.790.3713
05/26/21Activate Flight 64/65 (Researcher #73/74) (Update each flight)Science3.311387700
05/26/21Activate Flight 64/65 (Researcher #73/74) (Update each flight)Science3.3116.383.7722
06/01/21Activate Flight 66 (Researcher #75) (Update each flight)Science3.6119.980.1710
06/02/21Activate Flight 67/68 (Researcher #76/77) (Update each flight)Science3.4123.376.70
06/02/21Activate Flight 67/68 (Researcher #76/77) (Update each flight)Science3.1126.473.60
06/05/21Activate Flight 69 (Researcher #78) (Update each flight)Science3.4129.870.2726
06/07/21Activate Flight 70/71 (Researcher #79/80) (Update each flight)Science3.5133.366.7720
06/07/21Activate Flight 70/71 (Researcher #79/80) (Update each flight)Science2.9136.263.8690
06/08/21Activate Flight 72/73 (Researcher #81/82) (Update each flight)Science3.3139.560.5720
06/08/21Activate Flight 72/73 (Researcher #81/82) (Update each flight)Science3.6143.156.9720
06/15/21Activate Flight 74 (Researcher #83) (Update each flight)Science3.2146.353.7680
06/16/21Activate Flight 75 (Researcher #84) (Update each flight)Science3.715050690
06/17/21Activate Flight 76 (Researcher #85) (Update each flight)Science315347600
06/22/21Activate Flight 77 (Researcher #86) (Update each flight)Science3.3156.343.7690
06/24/21Activate Flight 78 (Researcher #87) (Update each flight)Science3.5159.840.2690
06/26/21Activate Flight 79/80 (Researcher #88/89) (Update each flight)Science3.4163.236.8690
06/26/21Activate Flight 79/80 (Researcher #88/89) (Update each flight)Science3.4166.633.4680
06/28/21Activate Flight 81 (Researcher #90) (Update each flight)Science3.3169.930.1690
06/29/21Activate Flight 82 (Researcher #91) (Update each flight)Science3.3173.226.8687
06/30/21Activate Flight 83/84 (Researcher #92/93) (Update each flight)Science3.4176.623.4685
06/30/21Activate Flight 83/84 (Researcher #92/93) (Update each flight)Science3.418020680

Flight Reports began being entered into this system as of 2012 flights. If there were flights flown under an earlier log number the flight reports are not available online.