AD Amdt-39-9743

final rule
Data completeness: 70%

Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units

AD Number
Amdt-39-9743
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 95-ANE-68
FR Citation
61 FR 52876

Unsafe Condition

Material defect in certain high pressure turbine (HPT) disk forgings may result in HPT disk rupture prior to reaching the disk cyclic life limit.

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

Required Actions

Remove from service certain high pressure turbine (HPT) disks identified by serial number and replace with serviceable parts.

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

Compliance Time

Before further flight

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

Affected Aircraft

AlliedSignal Inc. (formerly Garrett) TSCP700-4B, -4E, and -5 auxiliary power units (APUs)

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

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗