Airworthiness directives › 2019-18-03
AD 2019-18-03 Airworthiness Directives; The Boeing Company Airplanes
Models named: 737 series, 737-100, -200, -200C, -300, -400, -500 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all The Boeing Company Model 737 series airplanes, certificated in any category, excluding Model 737-100, -200, -200C, -300, -400, and -500 series airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For all airplanes: Within 30 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, by removing any steps that change the size of the thrust reverser upper locking actuator lock sensor target.
Unsafe condition
This AD was prompted by a report indicating that alteration of thrust reverser upper locking actuators in accordance with certain data contained in the Boeing aircraft maintenance manual (AMM) could delay or prevent detection of the failure of the locking mechanism of a thrust reverser upper locking actuator. The FAA is issuing this AD to address the potential for an undetected unlocked condition of the thrust reverser upper locking actuator locking mechanism in flight, which could significantly increase the likelihood of an in-flight deployment of the thrust reverser and consequent loss of airplane control.
Affected ADs
None.
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1