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PN 442653 HMU for CFM56-7B26

发表时间：2026-03-23 23:00:54 来源：航空器材网浏览：

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PN 442653

HMU SN (see link below)

OHC FAA8130/FORM1/CAAC 2026-HONEYWELL

12 MONTH WARRANTY

EXW USA

TRACE 121

STOCK READY TO SHIP

$1.175M USD FIRM

CERT: TRACE: PICS:

PN 442653 HMU Market Research (CFM56-7B26 Engine):

PN 442653 is the Honeywell Hydromechanical Unit (HMU) / main turbine engine fuel control unit for CFM56-7B series engines (including -7B26 variant) on Boeing 737NG aircraft. It is a critical fuel-metering LRU (ATA Chapter 73-21-79, NSN 1680-01-588-5401) installed at the 8 o’clock position on the fan case.

Market Overview & Demand:
The aftermarket is active and liquid. The large ongoing 737NG fleet (plus freighter conversions) sustains steady demand for HMU spares and repairs despite gradual LEAP transition. Search volume and trading remain strong into 2026.

Summary: CFM56-7B26 Engine Growth and Rising MRO/Supply Chain Costs (2026)

The CFM56-7B26 engine, the primary powerplant for the Boeing 737-800, maintains robust growth and relevance in 2026. Part of the record-breaking CFM56 family, the -7B variant supports a massive installed base with nearly 600 million flight hours accumulated and over 7,000 737NG aircraft delivered. Continued operation of 737NG fleets, fueled by 737 MAX delivery delays and rising freighter conversions, has sustained high utilization and expanded aftermarket demand.MRO costs for CFM56-7B engines have increased notably, with lease rates rising 15–20% and maintenance values climbing 10–30% due to shop visit backlogs, parts scarcity, and inflation. The ongoing Iran conflict and Strait of Hormuz crisis have further driven up pricing. Surging oil and jet fuel costs, combined with maritime shipping delays and elevated air cargo rates, are inflating parts procurement and logistics expenses. This is creating additional upward pressure on MRO pricing and overall supply chain costs for CFM56-7B26 operators globally.

Why Operators Prefer Honeywell MRO Unit Release vs. Independent Part 145 Competitors

Operators often favor Honeywell's OEM MRO (maintenance, repair, and overhaul) for components like the PN 442653 HMU on CFM56-7B engines due to several key advantages over independent FAA/EASA Part 145 repair stations:

Genuine OEM Parts and Standards: Honeywell uses original engineering, proprietary data, and certified parts—no PMA/DER substitutes—ensuring maximum reliability, longer on-wing life, reduced rework, and better performance post-overhaul.
Superior Traceability and Compliance: Fresh tri-release certifications (FAA 8130-3, EASA Form 1, CAAC) provide full global airworthiness acceptance, complete digital traceability, and alignment with the latest service bulletins/CMM updates, minimizing regulatory risks.
Proven Reliability and Reduced Risk: OEM-backed repairs offer peace of mind with less chance of future findings, potential extended warranties/support, and in-house expertise for critical components like fuel controls.
Quality Assurance: Adherence to strict OEM processes and AS9100 standards delivers consistent, high-confidence results, especially valuable for high-utilization fleets or operators prioritizing safety over cost.

While independent Part 145 shops often provide lower prices, faster turnaround in some cases, and flexibility (e.g., using alternative repairs), many operators accept higher costs for Honeywell's fresh overhaul release when maximum reliability, broader certification, and OEM-level assurance are critical—particularly amid supply chain pressures and fleet demands in 2026.