CBP just pushed the Enhanced ACAS enforcement deadline from November 2026 to May 1, 2027 — but don't mistake extra time for extra mercy. When full enforcement kicks in, every air cargo shipment entering the U.S. without the right data will face Do Not Load orders, $5,000-per-violation penalties, and liquidated damages. Here's your complete preparation playbook.
On August 10, 2026, CBP issued CSMS #69486540 — a bulletin that landed in the inboxes of air carriers and freight forwarders with a deceptively simple message: you have more time. The phased enforcement period for the Enhanced Air Cargo Advance Screening (ACAS) Interim Final Rule, originally set to expire November 21, 2026, now extends to May 1, 2027.
But here's what CBP didn't say in the headline: they're already flagging data quality issues. They're already issuing Requests for Information on shipments with vague cargo descriptions. And they explicitly stated that "willful and egregious violators will be subject to enforcement actions at all times" — even during the grace period.
The extension isn't a gift. It's CBP telling the industry: we know you're not ready, and we'd rather delay than deal with the chaos of enforcing against unprepared filers. If your air cargo supply chain still runs on the old 6-field ACAS submission, you have roughly eight months to overhaul your data collection, system integrations, and shipper relationships.
Why CBP Expanded ACAS: The Security Gap That Forced Action
The original ACAS program launched in 2018 with a straightforward mandate: submit six data elements before loading cargo onto a U.S.-bound aircraft so CBP and TSA could run risk assessments. Those six fields — shipper name and address, consignee name and address, cargo description, quantity, weight, and air waybill number — were the bare minimum for security targeting.
But the air cargo environment changed dramatically. Approximately 4 million parcels now enter the United States daily under the de minimis provision alone. Chinese e-commerce platforms like Shein and Temu ship a combined 600,000 packages per day to U.S. addresses. CBP's own analysis identified "significant ongoing threats to the security of international air cargo operations" that the original six fields simply couldn't address.
On November 21, 2025, CBP published the Enhanced ACAS Interim Final Rule (90 FR 52796), adding 5 new mandatory data elements, 12 conditional elements, and 4 situation-dependent elements. The rule took effect immediately — with a 12-month enforcement grace period that has now been extended by roughly five additional months.
The 21 New Data Elements: Mandatory, Conditional, and Situational
Understanding exactly what CBP now requires is the first step toward compliance. The Enhanced ACAS rule creates three tiers of data obligations, all submitted at the lowest air waybill level (house air waybill if applicable).
New Mandatory Data Elements (Required for Every Shipment)
These five fields must accompany every single ACAS filing, no exceptions:
| # | Data Element | What It Means |
|---|---|---|
| 1 | Consignee email address | Email for the named consignee |
| 2 | Consignee phone number | Direct phone for the named consignee |
| 3 | Shipment packing location and/or scheduled pickup location | Where the cargo was physically packed or picked up |
| 4 | Ship-to party | The actual delivery destination party (if different from consignee) |
| 5 | Verified Known Consignor status (yes/no) | Whether the shipper holds CBP-recognized VKC designation |
Conditional Data Elements (Required if Shipper is NOT a Verified Known Consignor)
If your shipper doesn't hold Verified Known Consignor status — and most don't yet — these 12 additional fields kick in:
- Shipper email address
- Shipper phone number
- Customer account shipping frequency/volume
- Customer account billing type
- Customer account holder
- Customer account name
- Customer account issuer
- Customer account number
- Customer account shipping frequency/volume
- Customer account establishment date
- Customer account billing type
- IP or MAC address used during creation of customer account
Conditional Data Elements (Situation-Dependent)
Four additional fields required under specific transaction conditions:
- Shipping cost
- IP or MAC address used to initiate the shipping transaction
- Biographic data
- URL of the product listing
These situation-dependent elements target e-commerce and marketplace transactions specifically — CBP wants to trace the digital footprint of online orders flowing through platforms into the air cargo system.
What Happens When You Don't Comply: CBP's Enforcement Arsenal
CBP has four response actions it can take on any ACAS submission in near real-time:
| CBP Response | What It Means | Impact |
|---|---|---|
| Do Not Load (DNL) | Cargo cannot be placed on the aircraft | Complete shipment stoppage at origin |
| Hold for Screening | Additional physical screening required | Delays, additional handling costs |
| Request for Information (RFI) | More detail required (e.g., vague description) | Filing must be updated before clearance |
| Status Accepted | Cargo cleared to load | No action needed |
After May 1, 2027, CBP has stated it "will take prompt enforcement action" against filers who fail to submit enhanced data elements. The penalty structure includes:
- $5,000 per violation for failure to comply with ACAS data requirements
- Liquidated damages assessed against the carrier's customs bond
- TSA penalties assessed separately for violations of TSA's security regulations
- Increased targeting scrutiny on future shipments from non-compliant filers
A carrier losing a Do Not Load order on even a single shipment can face up to $30,000 per day in lost revenue from rejected and rerouted cargo, according to CBP's own cost analysis in the Federal Register rulemaking.
The Verified Known Consignor Program: Your Compliance Shortcut
The single most important strategic decision for regular air cargo shippers is pursuing Verified Known Consignor (VKC) status. This designation eliminates the requirement to submit most of the 12 conditional data elements — cutting your per-shipment data burden roughly in half.
How VKC Works
The Verified Known Consignor framework operates on a risk-based security philosophy: shippers who undergo rigorous security vetting and maintain approved security practices earn trusted-trade-partner benefits. When an ACAS filing indicates the shipper holds VKC status, CBP skips the conditional data elements because it already has confidence in the shipper's identity and practices.
Current Status of the Program
CBP is reviewing established foreign Known Consignor programs for compatibility with CBP vetting standards. The agency has stated it will:
- Accept established Verified Known Consignor numbers from recognized foreign programs
- Publish further guidance on enrollment once the program is fully active
- Retain sole discretion to recognize (or refuse) established consignor programs
Who Should Pursue VKC Status
If your organization ships air cargo to the U.S. regularly — particularly if you're a manufacturer, consolidator, or frequent shipper — the VKC designation offers:
- Reduced data burden: Most conditional elements waived
- Faster processing: Streamlined CBP risk assessment
- Lower operational costs: Less data collection complexity per shipment
- Competitive advantage: Faster transit times versus non-VKC competitors
What the Extension Really Signals: Reading Between CBP's Lines
CBP's stated reasons for the extension are telling. The agency cited the need for the trade community to:
- Complete system integrations
- Refine compliance procedures
- Resolve data quality issues
Translation: the industry is struggling. The conditional data elements — particularly IP addresses, customer account details, and shipping frequency data — require information that many carriers and forwarders simply don't collect today. Building the systems to capture, validate, and transmit 21 additional fields per shipment at the house air waybill level is a significant IT and operational undertaking.
During the extended grace period, CBP expects filers to:
- Continue submitting ACAS data under existing requirements
- Promptly address any data quality issues CBP identifies
- Confirm internal systems can meet technical specifications for full enforcement
- Maintain coordination with CBP representatives
This isn't passive waiting. CBP is actively monitoring compliance progress and flagging filers who aren't making good-faith efforts.
Your 8-Month Action Plan: What to Do Before May 2027
1. Audit Your Current ACAS Data Quality
Start immediately. Pull your last 90 days of ACAS filings and check: Are cargo descriptions specific (not generic terms like "freight" or "parts")? Are consignee names and addresses complete and verifiable? Do your submissions match associated HS codes? Vague descriptions are already triggering RFIs during the grace period.
2. Map the Data Gap
For each of the 21 new elements, identify where that data lives today in your systems — or whether you collect it at all. The conditional elements (IP addresses, account establishment dates, billing types) likely require new data fields in your booking and shipper onboarding workflows.
3. Update Shipper Agreements and Onboarding
Your shippers need to provide consignee emails, phone numbers, and packing locations. For non-VKC shippers, you'll need their customer account details, shipper contact information, and potentially product URLs. Update your booking forms, EDI specifications, and shipper agreements now — don't wait until April 2027.
4. Evaluate VKC Eligibility for Key Shippers
Identify your top 20 shippers by volume. If any participate in recognized foreign Known Consignor programs, confirm their status and prepare to submit VKC codes. For others, encourage enrollment as CBP publishes program details — it's in everyone's interest.
5. Test Your EDI/ACE Submissions
CBP transmits ACAS data through the Automated Commercial Environment (ACE) via EDI. Test your enhanced data submissions now, during the grace period, when errors won't trigger penalties. Fix integration issues while CBP is in "technical assistance" mode rather than enforcement mode.
6. Build Internal Escalation Protocols
Establish clear procedures for handling DNL orders, RFIs, and screening holds. When full enforcement begins, response times will matter. Know who in your organization handles CBP communications and ensure they have authority to act quickly.
What's Coming Next: Beyond May 2027
The Enhanced ACAS rule is part of a broader CBP strategy to push data collection upstream — requiring complete, accurate shipment information before cargo moves, not after arrival. Watch for:
- VKC program formal launch: CBP will publish enrollment criteria and recognized foreign programs, likely in early 2027
- Full enforcement on May 1, 2027: No further extensions have been announced — treat this as a hard deadline
- Potential additional data elements: The IFR invited public comments and CBP has signaled willingness to adjust requirements based on operational experience
- Integration with de minimis reforms: As the Section 321 landscape continues evolving, expect ACAS data to play a growing role in e-commerce cargo screening
The Bottom Line: Data Is the New Customs Compliance
The Enhanced ACAS rule represents a fundamental shift in how CBP secures the air cargo supply chain. It's no longer enough to move boxes with a basic waybill number and a generic description. Every shipment now needs a digital dossier — consignee contact details, packing locations, shipper verification status, and in many cases, the digital breadcrumbs of the underlying commercial transaction.
The May 2027 deadline will arrive faster than most supply chains can adapt. Companies that treat the extension as preparation time — not vacation time — will clear cargo faster, face fewer enforcement actions, and build the data infrastructure that increasingly defines competitive advantage in international trade. TariffLens monitors regulatory changes like Enhanced ACAS in real time, helping importers stay ahead of evolving compliance requirements.
This article is for informational purposes only and does not constitute legal, tax, or customs advice. Consult a licensed customs broker or trade attorney for guidance specific to your situation.