Fri, Nov 09, 2018
AD NUMBER: 2018-22-10
PRODUCT: All The Boeing Company Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A and KDC-10), DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F, MD-11, and MD-11F airplanes.
ACTION: Final Rule.
SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2016-04-16, which applied to the aircraft listed above.
AD 2016-04-16 required adding design features to detect electrical faults and to detect a pump running in an empty fuel tank. This AD continues to require adding design features to detect electrical faults and to detect a pump running in an empty fuel tank.
This AD also provides optional terminating action for certain requirements. This AD was prompted by a fuel system review conducted by the manufacturer.
DATES: This AD is effective December 12, 2018.
COST: The FAA estimates that this AD affects 341 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:
- Installing design features using a method approved by the FAA (retained actions from AD 2016-04- 16) - 152 work-hours × $85 per hour = $12,920. Parts $137,500. Cost per aircraft - $150,420.
- Installing design features using service information (retained optional actions from AD 2016-04-16) - 98 work-hours × $85 per hour = $8,330. Parts - $109,000. Cost per aircraft - $117,330.
Estimated Costs for Optional Terminating Actions
- Option 1: Replace connectors for Model DC10 and MD-10 (122 airplanes) - 68 work-hours × $85 per hour = $5,780. Parts - $54,842. Cost per aircraft - $60,622.
- Option 1: Replace connectors for Model MD11 (124 airplanes) 59 work-hours × $85 per hour = $5,015. Parts - $67,031. Cost per aircraft - $72,046.
- Option 2: Replace fuel pump housings for Model DC-10 and MD-10 (122 airplanes) Up to 81 work-hours × $85 per hour = $6,885. Parts - Up to $54,842. Cost per aircraft - Up to $61,727.
- Option 2: Replace fuel pump housings for Model MD-11 (124 airplanes) Up to 77 work-hours × $85 per hour = $6,545. Parts - Up to $67,031. Cost per aircraft - Up to $73,576.
FMI: AD
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