1. Small Column Insulated Delay (SCID) Issues
Jeffrey Peters
NSWC IHEODTD
23 May 2017

2. Small Column Insulated Delay (SCID)
JL56
XW55
JL57
XW54
MC60
SCIDs
B-1 PNs
JN10
WB56
JN11
JL56
WB55
JN12
WB54
XW54

3. ISSUE
During Ordnance Assessment (OA) testing of the WB55 (F-18) October 2012 several units failed to function when initiated
Led to decrease the installed time limit from 48 to 24 months
Several JL56 (T-6) units failed to function during July 2014 OA testing
Aircraft switched to SOLO mode to bypass JL56
Contractor replaced several lots worth of units
Two XW54 (F-18, T-45) units failed to function during 2017 OA testing
Effected lots removed from service
Closely monitoring lots remaining in-service
Doubling the WB55 requirement and replacement of JL56 units has strained the contractor’s capability, leading to delivery delays
Limited Service Life Extensions (SLE) possible
All SCID items tend to slow with total age and installed time
With observed no-fires, little or no extension is possible on WB55/JL56/XW54

4. PATH FORWARD
JL56 Vendor increased production. Replacement lots being delivered, currently out of Stock. New production deliveries due in Nov 2017
Delivering new design (New Part Number & NSN)
JL57 A reduced shelf/service life is being considered for delay timing
Current: 84/48 months shelf/service; proposed: 48/24 months shelf/service
NOTE: T-6 BOTH/SOLO/CMD FWD use must be authorized by The Program Office
WB55 Request expedited deliveries from Vendor
Redesign in qualification with goal of achieving at least prior life limits
Considering MC50 production run

5. PATH FORWARD CONTINUED
For all SCID items:
Continue to monitor items through OA, testing more regularly than standard item
Vendor has increased production with new hires
Current inventory will be strictly monitored
Manufacturing order and priority are being closely monitored based on requirements
Estimated date to return to prior ages and stock levels: January 2020