AD 2001-08-05

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Bombardier Model DHC-7-100, -101, -102, and -103 Series Airplanes

AD Number
2001-08-05
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 2000-NM-181-AD
FR Citation
66 FR 20377

Applicability

TypeManufacturerModelDetails
aircraft Bombardier DHC-7-100 Airworthiness Directives; Bombardier Model DHC-7-100, -101, -102, and -103 Series Airplanes

Unsafe Condition

Collapse of the main landing gear due to leaks of hydraulic oil from the main landing gear selector valve, resulting from a fracture of the endcap.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Inspect both endcaps of the main landing gear selector valve for hydraulic oil leaks within 100 flight cycles after the effective date. If leaks are detected, replace the leaking endcaps with stainless steel endcaps (P/N 52982) or replace the entire selector valve (P/N 57420-5A) before further flight. If no leaks are detected, repeat inspections at intervals not exceeding 400 flight hours until the requirements of paragraph (c) are met.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 100 flight cycles after the effective date.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Bombardier Model DHC-7-100, -101, -102, and -103 series airplanes, serial numbers 003 through 113 inclusive, certificated in any category.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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