AD 2024-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
cracked and severed structure found in the aft fuselage cant bulkhead at STA 1178.225 and vertical stabilizer rear spar installation, on a Boeing Model 717-200 airplane, and similar structure on Boeing Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes are susceptible to cracking, which could result in reduced structural integrity of the airplane.
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Required Actions
a one-time detailed inspection of the aft fuselage cant bulkhead and vertical stabilizer rear spar structure for any crack, and if any crack is found, obtaining and following approved repair instructions, and sending the inspection findings to the airplane manufacturer, and a detailed inspection of the cant bulkhead, left and right sides, between longerons 11L through 11R at the forward and aft surfaces; upper cap; upper (cap) doubler; bulkhead webs and doublers; stiffeners; lower tee cap and strap; and vertical stabilizer rear spar cap and web for any discrepancy, if any of the following conditions occur during any phase of flight: (1) high drag/side loads or unusual ground handling, (2) a hard or overweight landing, (3) severe turbulence (or rough air (turbulence)) or an excessive maneuver, or (4) high compressive loads to the hydraulic tail bumper/strut (for Model 717-200 airplanes) or auxiliary gear (tail bumper) (for Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes).
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Compliance Time
Before further flight
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Affected Aircraft
The Boeing Company Model 717-200 airplanes and Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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