USPS Skilled Maintenance Assessment (SMA) Study Guide | Interactive Excel | 142 Questions | Formerly Postal Exam 955

The USPS Postal Exam 955 is now the Skilled Maintenance Assessment (SMA) — and this is the most complete interactive study guide available for it.

The SMA tests real technical knowledge and hands-on maintenance skills across every domain you'll encounter on the job. Unlike the old IQ-style format, the SMA rewards candidates who actually know their trade. This guide was built by a working maintenance engineer — it covers exactly what the assessment tests.

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📋 WHAT'S INSIDE — 22 TABS

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✅ Electrical Systems & Electronics

✅ Mechanical Systems & Power Transmission

✅ Hydraulics & Pneumatics

✅ Shop Practices & Welding

✅ Troubleshooting Methods

✅ Motors & Motor Controls

✅ Logic Gates & PLCs

✅ Variable Frequency Drives (VFDs)

✅ Refrigeration & HVAC

✅ Pumps & Conveyor Systems

✅ PPE & Fire Extinguishers

✅ Spatial Reasoning

✅ Interactive Formula Calculator (40+ live calculators)

✅ Full 60-Question Practice Test with Answer Key

✅ 6 Full-Length SMA Sample Tests integrated & organized

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⭐ WHAT MAKES THIS DIFFERENT

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▸ 142 domain-specific practice questions with full explanations

▸ 6 full-length SMA sample tests — filtered, organized, and integrated by domain

▸ Built-in answer reveal — type A, B, C, or D and the correct answer appears automatically

▸ 40+ live formula calculators — Ohm's Law, gear ratios, transformer ratios, hydraulic force, and more

▸ Plain-English explanations written by a working maintenance engineer

▸ Works in Microsoft Excel or Google Sheets

▸ One-time purchase — yours forever, no subscription, no expiration

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👷 WHO THIS IS FOR

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Anyone applying for USPS Maintenance Mechanic (MM), Maintenance Mechanic MPE, Electronics Technician (ET), Building Equipment Mechanic (BEM), or Area Maintenance Technician (AMT) positions.

The SMA requires a passing score to qualify. A failing score means waiting before you can retest. This guide gives you the best possible preparation across every domain the assessment covers.

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📥 INSTANT DIGITAL DOWNLOAD

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Available immediately after purchase. No shipping. No subscription. No expiration. Open in Excel or Google Sheets and start studying today.

Formerly known as Postal Exam 955 — Updated for 2026–2027

Published by Southport Apps, LLC