F-111 Depot Fuselage Fuel Tank Deseal/Reseal Procedures.

reportActive / Technical Report | Accession Number: ADA050819 | Open PDF

Abstract:

The original EC5106 sealant in F-111 aircraft fuel tanks was deteriorating, resulting in unacceptable leaks. To correct this problem, the tanks were to be desealed and resealed with MIL-S-83430 polysulfide sealant. However, laboratory tests indicated that the MIL-S-83430 sealant alone would be attacked by the reverted EC5106 sealant to the extent that the desealreseal process would be required again in about five years. It is impossible to remove all the reverted sealant. The Physical Sciences Laboratory Section of the Sacramento ALC Industrial Products Division determined by testing that EC2216 epoxy, added as a barrier, would prevent damage to the MIL-S-83430 sealant for at least ten years. The report establishes procedures to accomplish the complete desealing and resealing of F-111D aircraft, assuring a positive seal throughout all of the fuselage integral fuel tanks. Author

Author(s):
Steinweg, Philip
Author Organization(s):
SACRAMENTO AIR LOGISTICS CENTER MCCLELLAN AFB CA AIRCRAFT SYSTEMS ENGINEERING UNIT
Descriptive Note:
Final rept.,
Supplementary Note:
Supersedes Rept. no. 12AEI-200-1060 and all previous issues.
Pagination:
0223

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
12AEI-200-1060B
 Subject Terms
Joint Capability Areas:
JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_6.1.3_Switching and Routing; JCA_4.3_Maintain; JCA_6.1.1_Wired Transmission; JCA_7_Protection; JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_7.1.2_Prevent Non-kinetic Attack; JCA_7.1_Prevent; JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_5_Command and Control; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_4_Logistics; JCA_5.3_Planning; JCA_4.2_Supply; JCA_3.2_Engagement; JCA_3_Force Application; JCA_6.4.1_Secure Information Exchange
Modernization Areas:
Cyber
Communities of Interest:
Air Platforms
Descriptor(s):
*JET FIGHTERS, *FUEL TANKS, *SEALING COMPOUNDS, BONDED JOINTS, POLYSULFIDES, BONDING, FAILURE(MECHANICS), DETERIORATION, EPOXY RESINS, SEALS(STOPPERS)
Field(s)/Group(s):
Attack and Fighter Aircraft
Keyword(s):
*F 111 aircraft, Deseal, Reseal, Aircraft sealants, LPN AFLC 75 18
Report Date:
1977 Apr 29