AD NUMBER: 2019-22-10

PRODUCT: All Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes.

ACTION: Final rule; request for comments.

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2019-20-02, which applied to the aircraft listed above.

AD 2019-20-02 required repetitive inspections for cracking of the left- and right-hand side outboard chords of frame fittings and failsafe straps at a certain station around two fasteners, and repair if any cracking is found.

This AD also requires repetitive inspections for cracking of the left- and right-hand side outboard chords of frame fittings and failsafe straps at a certain station, but expands the inspection to the area around eight fasteners, and also requires repair if any cracking is found.

This AD was prompted by a determination that the inspection area needs to be expanded.

DATES: This AD is effective November 13, 2019. The FAA must receive any comments on this AD by December 30, 2019.

COST: The FAA estimates that this AD affects 1,911 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

• Inspection (retained action from AD 2019- 20-02): 1 work-hour × $85 per hour = $85 per inspection cycle per airplane.
• Reporting (retained action from AD 2019- 20-02): 1 work-hour × $85 per hour = $85 per airplane.
• Inspection (new action): 1 work-hour(s) × $85 per hour = $85 per inspection cycle per airplane.
• Reporting (new action): 1 work-hour × $85 per hour = $85 per airplane.

FMI: AD