NAC-DFD®

NAC-Dynamic Friction Decelerometer® is FAA approved for testing runway surfaces.

NAC Dynamics, LLC USA · com.nac

Not rated yet 1K+ downloads v2.5 2.9 MB Android 4.4+ PEGI 3 · Everyone

Download APK 2.9 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.5 (25)
Updated: Jun 7, 2024 (2 years ago)
APK size: 2.9 MB
Requires: Android 4.4+ (API 19)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Nov 10, 2020 (at least)
Permissions: 2 (1 sensitive)
Website: airportnac.com/airport-app
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

NAC-DFD® is an app by NAC Dynamics, LLC USA in the Tools category, listed since at least November 2020. It has no native code, so it runs on any Android processor.

It asks for 2 permissions, 1 of them sensitive: modify shared storage. The app offers in-app purchases through Google Play.

Description

From the listing uploaded by “appupdater”.

NAC-Dynamic Friction Decelerometer (NAC-DFD®) is an electronic friction testing device for airport runways. This 3-axis mobile Android™ application can be used to “spot-check” a contaminated surface during winter runway operations. The application records vehicle braking values by measuring the “g” force, or lock-wheel braking action, when the vehicle operator completes a qualified test. This easy-to-use solution, when used with a vehicle mounting device, automatically creates the final report in runway thirds, “touchdown”, “midfield”, “rollout”. The airport operator can then select from a list of 14 different contaminate types used in reporting runway conditions during winter operations. All necessary data is recorded with time, date, operator, and assigned user ID. Results are exported using the standard print function. The NAC-DFD® friction measuring equipment is used by airport operators to determine the effects of friction-enhancing treatments. The NAC-DFD® can show the trend of a runway as to increasing or decreasing friction. NAC-DFD® is approved by the Federal Aviation Administration as listed in Advisory Circular 150/5200-30C, Appendix 3.

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jun 7, 2024.
Certificate issued to “nac” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Jun 7, 2024
Validated against Google Play Jun 7, 2024
Signed byCN=Unknown, OU=nac, O=nac, L=Unknown, ST=Unknown, C=Unknown
Signing certificate (SHA-1)14:DE:1B:8A:33:03:2A:82:E9:6C:24:58:46:F2:DB:28:AB:CE:FB:5D
File MD53a5e65a1c54bdafd8797827ea576a534
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (2)

NAC-DFD® requests 2 permissions, 1 of them sensitive.

Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
In-app purchases (Google Play Billing) com.android.vending.BILLING

Required hardware & features

Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape

NAC-DFD® APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is NAC-DFD® free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the NAC-DFD® APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 3a5e65a1c54bdafd8797827ea576a534.