AD 89-08-03 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
Unsafe Condition
Depressurization as a result of failure of the crease beam and resultant adjacent frame failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform detailed visual and dye penetrant inspections of the body crown crease beam for cracks, and inspect adjacent intercostals, skins, and stringers. Repeat inspections at intervals not exceeding specified landings; repair cracks prior to further flight unless deferred under specific conditions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 1,000 landings after the effective date of this AD, within 2,500 landings after the effective date but not exceeding 14,000 total landings, or prior to accumulation of 10,000 landings, depending on accumulated landings as of the effective date. For modified airplanes, within the later of 500 landings after the effective date or prior to 10,000 landings after modification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747 series airplanes listed in Boeing Service Bulletin 747-53-2297 (June 30, 1988), except line numbers 001 through 065.
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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