DC-8 07/18/16

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Flight Number: 
1116
Payload Configuration: 
ATom-1 Configuration
Nav Data Collected: 
No
Total Flight Time: 
1.4 hours
Flight Segments: 
From:KPMDTo:KPMD
Date:07/18/16
Flight Time:1.4 hours
Log Number:168002PI:Steven Wofsy
Funding Source:Jennifer Olson - NASA - SMD - ESD - ESSP Mission Manager
Purpose of Flight:Check
Comments:This was a troubleshooting flight as we try to understand the unknown cause of an unwanted vibration. We had tightened the upper inboard SAGA inlet leading edge. This required drilling and installing new set screw to repair the leading edge component that was loose and the suspected source of vibration. The vibration did return. However, it was diminished in amplitude and basically only occurred when at bank angles greater than 20 deg and at higher altitudes (approx 35kft). These flight vibration characteristics were significantly different than on the previous flights where the vibration occurred at wings level conditions. The aircraft returned in good condition although #2 thrust reverser did not deploy 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.