AD 96-18-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B2-1A | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B2-1C | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B2-203 | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B2K-3C | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B4-103 | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B4-203 | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B4-2C | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B4-601 | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B4-603 | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
| aircraft | Airbus | AlliedSignal Inc | The Boeing Company | A300 B4-605R | Airworthiness Directives; AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units |
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 affected HPT disks identified by serial number in AlliedSignal Aerospace SB No. TSCP700-49-A7168 and replace with serviceable parts. Actions must be done in accordance with the specified service bulletin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to accumulating 7,500 cycles since new (CSN), or 3 years after the effective date of this AD, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AlliedSignal Inc. TSCP700-4B, -4E, and -5 Auxiliary Power Units (APUs) with HPT disks serial numbers listed in AlliedSignal Aerospace SB No. TSCP700-49-A7168, installed on Airbus A300 series, McDonnell Douglas DC-10, KC-10, and MD-11 series aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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