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Bombardier Global Express Flap Bulletin

The E-drill is being used in support of the recent Service Bulletins regarding Bombardier Global Express Flap drainage and corrosion issues. Bombardier released multiple Service Bulletins (SBs) calling for the inspection and replacement of the inner flap spigot bushing on all Global aircraft. To replace the spigot bushing, each inboard flap must be deskinned, which involves removing hundreds of titanium fasteners from composite skins.

E-DRILL- THE FASTENER REMOVAL TOOL OF CHOICE

Perfect Point was approached in 2018 as a method to assist in the removal of hard metal fasteners from composite flight control surfaces due to the release of a service bulletin involving the inboard flaps of all Global aircraft. The removal of hundreds of titanium “blind-bolt” fasteners was wreaking havoc on the aircraft and workforce. E-drill was sought as a solution to these problems.

Global Assumptions

  • Flaps per Wing........................3
  • Fasteners per Flap..............500
  • Burdened Labor Rate.........$85

E-drill Assumptions

  • E-drill Time per Fastener.........30sec
  • E-Drill Consumables Cost...........$36
  • FOD Cleanup/Shift..................0.15hr

Twist Drill Assumptions

  • Twist-Drill time per Fastener........3min
  • Threaded Carbide Cutter Cost.......$25
  • FOD Cleanup/Shift (# Hours).......0.5hr

Cost Comparison Per Fastener

  • E-drill
  • $1.58
    per FASTENER
  • Consumables(Electrodes).....$0.42
  • Labor.......................................$1.13
  • Cleanup Labor........................$0.02
  • Twist Drill
  • $9.52
    per FASTENER
  • Consumables(Bits)..............$5.00
  • Labor.....................................$4.25
  • Cleanup Labor......................$0.27

Cost Comparison Per Aircraft

  • E-drill
  • $4,734.34
    per FLAP
  • Consumables(Electrodes).....$1,270.59
  • Labor.......................................$3,400.00
  • Cleanup Labor.............................$63.75
  • Twist Drill
  • $10,666.67
    per FLAP
  • Consumables(Bits)............$15,000.00
  • Labor...................................$12,750.00
  • Cleanup Labor.........................$796.88

“Using E-drill has cut the repair

time by 2/3 for this job [global flap rework]"

- 3rd Party Maintainer 

Calculate Your Cost Savings

E-DRILL'S UNIQUE CAPABILITIES

E-drill’s unique hand-held EDM Technology offers an accurate removal process that cannot be matched by the traditionalmethod of drilling. E-drill uses precision locating tools, electrodes, and depth controlled cutting to ensure every cut staywithin the fastener and stops at a computer-controlled depth– which reduces the rate of damage to less than 1% during the project. By bringing E-drill into the work center, companies can increase the throughput of these components andreturn the aircraft to the customer in a timelier manner.

E-drill Global System Faster Kits

These new E-drill kits have everything you need to work on the fasteners you face when working on the Bombardier Global Flap Bulletins.  These kits have hand-picked electrodes and accessories along with apertures or mechanical locators that are pre-machined to match the fasteners you find on these flaps. Fastener removal has never been easier!

MS21140-S fasteners, Size 5-8

MBF2112-S fasteners, Size 5-8

E-Drill Leasing Now Available

Need an E-Drill but having trouble finding room in this year's capital budget? You're now able to lease an E-Drill, making it easier than ever to get your hands on the most innovative fastener removal technology in the industry. Perfect Point is working with Carolina GSE, a trusted provider of ground support equipment services, to bring E-Drill to you by providing flexible leasing options to match your needs.

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