# NAC-DFD® Decelerometer

> NAC-DFD Decelerometer

Canonical page: [https://chrome-stats.com/d/id6478895830](https://chrome-stats.com/d/id6478895830)

## Overview

- **ID:** `id6478895830`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Neubert Aero Corp
- **Category:** Utilities
- **Version:** 2.68
- **Last updated:** 2025-01-25
- **First published:** 2024-10-29
- **Size:** 2.89 MB
- **Data as of:** 2026-09-26
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/nac-dfd-decelerometer/id6478895830)
- **Website:** [http://www.airportnac.com](http://www.airportnac.com/)
- **Privacy policy:** [http://www.airportnac.com](http://www.airportnac.com/)

## Description

Terms of Service: https://airportnac.com/terms-and-conditions/

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

NAC-Dynamic Friction Decelerometer (NAC-DFD®)

The NAC-DFD® is an electronic friction testing device designed for airport runways. This 3-axis mobile iOS™ application enables airport operators to "spot-check" contaminated surfaces during winter runway operations.

Key Features:

Accurate Measurements: Records vehicle braking values by measuring the "g" force or lock-wheel braking action during qualified tests.

Automated Reporting: Automatically generates final reports segmented into runway thirds: "touchdown," "midfield," and "rollout."

Comprehensive Data Recording: Captures all necessary data, including time, date, operator, and assigned user ID.

Versatile Contaminant Selection: Allows operators to choose from 14 different contaminant types for reporting runway conditions during winter operations.

Easy Data Export: Supports exporting results using the standard print function.

Additional Information:

The NAC-DFD® assists airport operators in assessing the effectiveness of friction-enhancing treatments by indicating trends in runway friction levels. It is approved by the Federal Aviation Administration, as listed in Advisory Circular 150/5200-30C, Appendix 3.

Note: For continued testing, a subscription is required.

## Rankings

- #1,289,082 — Overall

## Similar extensions and apps

- [ADE Friction](https://chrome-stats.com/d/id6476164975)
- [ACR/PCR Calculator](https://chrome-stats.com/d/id6443819267) — 4.00 / 5
- [iAccel](https://chrome-stats.com/d/id952697111) — 1.00 / 5
- [BrakeTest](https://chrome-stats.com/d/id6757305295)
- [Parking Diagnostics](https://chrome-stats.com/d/id1061621000)
- [DFC Track](https://chrome-stats.com/d/id1565811769) — 5.00 / 5
- [iBrake](https://chrome-stats.com/d/id288796398) — 2.40 / 5
- [DWAC- Driver Walk Around Check](https://chrome-stats.com/d/id1626473798)
- [AirSafe 139](https://chrome-stats.com/d/id6739757296)
- [Driving Assist - G-Force Meter](https://chrome-stats.com/d/id6751301995) — 5.00 / 5
- [GroundRollCalc](https://chrome-stats.com/d/id6747908402)
- [Noise Patrol App](https://chrome-stats.com/d/id1101685127)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id6478895830)