DC-8 07/20/16

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Flight Number: 
1118
Payload Configuration: 
ATom-1 Configuration
Nav Data Collected: 
No
Total Flight Time: 
1 hours
Flight Segments: 
From:KPMDTo:KPMD
Start:07/20/16 22:34 Z Finish:07/20/16 23:31 Z
Flight Time:1 hours
Log Number:168002PI:Steven Wofsy
Funding Source:Jennifer Olson - NASA - SMD - ESD - ESSP Mission Manager
Purpose of Flight:Check
Comments:For our 3rd flight this week to troubleshoot the unknown vibration, we removed TOGA and QCLS (SAGA upper inlets were still off the airplane). Success! We had no vibration on this flight. We flew at Mach 0.78 for altitude climb from 28kft to 35kft. At 35kft, we banked +/- 30 deg, did a wings-level alpha sweep, initiated an accel decel to M 0.83 and back to 0.78. We then climbed to 41kft to declare an RTB with no sign of the vibration returning. We believe the problem was with the TOGA afterbody and we have a plan to fix or remove it without impacting the science measurement. The aircraft returned in good shape, except the #2 thrust reverser did not actuate on landing.
Flight Hour Summary: 
168002
Flight Hours Approved in SOFRS104.1
Total Used107.5
Total Remaining-3.4
168002 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
07/11/161113Check1.51.5102.6
07/12/161114Check3.95.498.7
07/18/161116Check1.46.897.3
07/19/161117Check1.17.996.2
07/20/161118Check18.995.2
07/26/16 - 07/27/161119Check6.515.488.7
07/28/161120Check0.816.287.9
07/29/161121Science9.425.678.5
08/01/16 - 08/02/161122Science10.235.868.3
08/03/16 - 08/04/161123Science7.343.161
08/06/16 - 08/07/161124Science8.651.752.4
08/08/16 - 08/09/161125Science6.658.345.8
08/12/16 - 08/13/161126Science10.668.935.2
08/15/161127Science9.478.325.8
08/17/161128Science8.586.817.3
08/20/161129Science9.896.67.5
08/22/161130Science6102.61.5
08/23/161131Science4.9107.5-3.4

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.