AD 2001-24-33

final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 737-100, -200, and -200C Series Airplanes

AD Number
2001-24-33
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 2001-NM-221-AD
FR Citation
66 FR 64099

Applicability

TypeManufacturerModelDetails
aircraft Boeing 737-100 Airworthiness Directives; Boeing Model 737-100, -200, and -200C Series Airplanes

Unsafe Condition

Chafing of the power feeder wire bundle for the auxiliary power unit (APU) generator and the first officer's elevator down control cable, and insufficient separation between the wire bundle and control cable, could lead to a short circuit and resultant arcing. This arcing could sever the control cable, and if combined with a subsequent failure of the captain's elevator down control cable, could result in loss of elevator control of the airplane.

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Required Actions

Within 18 months after the effective date, perform a one-time detailed visual inspection for damage (i.e., chafing) of the power feeder wire bundle for the APU generator (wire bundle W146) and the first officer's elevator down control cable, and for proper separation between the control cable and wire bundle. Attach wire bundle W146 to adjacent wire bundles, as applicable. If damage to the control cable or wire bundle is found, or if the separation distance is insufficient, take corrective actions as specified, including replacing or repairing the damaged components and rerouting the wire bundle to ensure proper separation.

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Compliance Time

Within 18 months of the effective date

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Affected Aircraft

Boeing Model 737-100, -200, and -200C series airplanes, as listed in Boeing Special Attention Service Bulletin 737-24-1144, Revision 1, dated June 21, 2001, and certificated in any category.

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Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

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