AD 83-14-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer S.A. | EMB-110P1 | Airworthiness Directives; EMBRAER Models EMB-110P1 and EMB-110P2 Airplanes |
| aircraft | Embraer S.A. | EMB-110P2 | Airworthiness Directives; EMBRAER Models EMB-110P1 and EMB-110P2 Airplanes |
Unsafe Condition
Loose rivets (MS20470AD3 and MS20470AD4) in horizontal stabilizer front attachment and fuselage bulkhead 33 could lead to structural failure. Cracks in bulkhead 33 web or flange areas adjacent to horizontal stabilizer fittings may also cause structural failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours time-in-service after AD effective date, and every 500 hours thereafter, visually inspect specified rivets and flanges for looseness and cracks. If loose rivets are found, repeat inspections at intervals not exceeding 125 hours until 500 hours accumulated, then replace rivets with Hi-Lock or AN3-5A bolts. If cracks are found, repair bulkhead 33 per SB Figure 5, reinforce C channels, and replace rivets per SB Figure 4. Adjust inspection intervals up to 10% for maintenance scheduling.
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Compliance Time
Within the next 50 hours time-in-service after the effective date of this AD, and thereafter at intervals not to exceed 500 hours time-in-service, except as provided in paragraph b) of this AD.
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Affected Aircraft
Embraer S.A. Models EMB-110P1 and EMB-110P2 (serial numbers 110001 through 110386, 110388 through 110397, 110399 through 110401, 110404 through 110408, 110410 through 110412, 110414, 110415, and 110421).
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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