AD Amdt-39-10138

final rule
Data completeness: 70%

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

AD Number
Amdt-39-10138
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-ANE-03
FR Citation
62 FR 49427

Unsafe Condition

First stage low pressure compressor (LPC) disk rim separation due to low cycle fatigue.

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

Required Actions

Remove from service affected disks, replace them with serviceable parts, and establish a life limit of 8,000 cycles since new (CSN).

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 AiResearch and Garrett) TSCP700-4B and -5 Series 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

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View Official Source ↗