AD 90-26-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
Unsafe Condition
Delamination, cracking, and/or corrosion of fuselage skin circumferential joints could lead to loss of cabin pressurization.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Accomplish external visual inspections within 15 months after the effective date, followed by repeat inspections at intervals not exceeding 15 months. Conduct low frequency eddy current (LFEC) inspections within 15 months after the effective date, repeated every 30 months. Perform internal close visual inspections within 48 months after the effective date, repeated every 48 months. High frequency eddy current (HFEC) inspections must be done within 3,000 landings or 30 months after the effective date, whichever comes first, with repeats every 4,000 landings or 48 months. Repair corrosion or cracking before further flight. Reseal if sealant deteriorates but no cracking/corrosion found. Modifications per service bulletin sections III and IV terminate inspections as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 15 months after the effective date of this AD, and subsequent intervals as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 727 series airplanes listed in Boeing Service Bulletin 727-53-0084, Revision 4, dated August 2, 1990, 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 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.