When you decide to upgrade your aircraft, getting an accurate King Air propeller upgrade quote or winglet estimate shouldn’t feel like solving a puzzle. Whether you’re looking to reduce cabin noise, improve climb performance, or increase your aircraft’s overall resale value, having the right information ready speeds up the quoting process and ensures you receive exact numbers.
As an independent BLR Aerospace sales representative, I walk owners, operators, and maintenance managers through this evaluation process every day. Here is exactly what you need to know to get a precise quote for BLR winglets or Whisper Propellers
What Our Clients Say About Us
“Our fleet of King Air 350’s flew in remote locations overseas, in excess of 225 hours per month… no time for propeller issues. I relied on Dave Chapman for quick response times, technical advice, and seamless propeller support.”
Nic Hawker, King Air Fleet with Whisper Props®
4 Things to Have Ready Before Requesting Your Upgrade Estimate
To deliver an accurate pricing breakdown or winglet specification, we need to look closely at your aircraft’s specific configuration. Having these four items ready ensures there are no surprises or delays down the line:
1. Aircraft Serial Number and Exact Model
Your tail number is helpful, but the aircraft serial number and official model designation (e.g., King Air C90, E90, 200, 300, 350, or 360) are critical. Supplemental Type Certificates (STCs) and Airplane Flight Manual Supplements (AFMS) are tied directly to specific serial number effectivity ranges for each aircraft. Having this ready speeds up verifying which composite upgrade STC applies to your airframe.
2. Current Propeller and Wing Configuration
- For Props: What props are currently installed on the airframe? (e.g., standard 3-blade or 4-blade Hartzell or McCauley units).
- For Winglets: Does the aircraft currently have standard factory wingtips or an existing aftermarket modification?
3. Existing STC and Avionics Modifications
Let us know if your aircraft already has major modifications installed, such as heavy-weight gear, Raisbeck performance enhancements, or specific avionics packages (like RVSM setups). Knowing what’s currently on the airframe ensures full technical compatibility and seamless FAA approval with new BLR winglet or composite blade upgrades.
4. Primary Operational Goals
Are you looking for short-field capability for mountain airstrips, cabin noise reduction, increased useful load, or better overall climb performance? Clarifying your primary mission helps us recommend whether winglets, 5-blade, or 7-blade Whisper Props or the combined performance package will yield the highest return on investment. Learn more about our step-by-step upgrade process to see how we manage retrofits from technical review to installation.
What Your Upgrade Proposal Includes
When you request a quote through On-Wing Consulting, Inc., your estimate will clearly detail:
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- Equipment Costs: Complete BLR Aerospace winglet kits or composite Whisper Propeller assemblies.
- STC Paperwork & AFMS Documentation: Full FAA/EASA certified documentation packages required for your permanent aircraft logbooks.
- Installation & Shop Guidance: Estimates on typical installation downtime and recommendations for authorized, BLR-familiar install facilities.
- Resale & Equity Insight: Details on how Aircraft Bluebook evaluates upgrade equity relative to your initial installation investment.
Questions to Ask Before You Sign
When evaluating any upgrade proposal, always verify:
- Is the STC fully certified for your aircraft’s specific serial number?
- What are the expected lead times for equipment delivery?
- Does the estimate include complete Flight Manual Supplements (AFMS) updates?
- How does the installation impact your current weight and balance limits?
Frequently Asked Questions
1. How long does it take to get an accurate propeller upgrade quote?
Once you provide your aircraft serial number, current props, and STC setup, we deliver a detailed, customized proposal within 24 to 48 hours.
2. Why do you need my aircraft serial number just to give pricing?
Supplemental Type Certificates (STCs) and AFMS documentation are tied to specific serial number effectivity ranges. Knowing your exact serial number ensures your pricing breakdown matches your airframe’s baseline FAA/EASA compliance.
3. Can I upgrade my propellers if my airframe already has aftermarket winglets or modifications?
Yes. Providing your full equipment list upfront allows us to verify STC compatibility between existing modifications (like BLR winglets, Raisbeck packages, or RVSM) and new 5-blade or 7-blade Whisper Props before you commit.
4. What typical downtime should I expect during installation?
A composite prop upgrade typically requires 2 to 3 days of shop downtime, while a combined winglet and propeller installation takes 5 to 7 days.
5. Does an upgrade package include all necessary FAA STC paperwork?
Yes. Every proposal from On-Wing Consulting includes the complete equipment package, certified FAA/EASA STC documentation, and required Flight Manual Supplements (AFMS) for your aircraft logbooks.
Ready for Your Quote? Contact On-Wing Consulting
I run a one-person shop in Oklahoma City with fifty years of hands-on aviation experience, and I answer my own phone. I’m not here to push equipment I’m here to give you honest numbers, technical clarity, and straightforward guidance. Learn more about
and how On-Wing Consulting supports aircraft owners.
If you are ready to evaluate options or want to review winglet pricing for your tail number:
Phone: Call me 24/7 at 405-831-5466
Request Online: Submit a direct upgrade proposal request
Contact: Dave Chapman, On-Wing Consulting, Inc.