# FPV Drone Crash Recovery: Post-Crash Inspection and Repair Guide

You’ve just walked 300 meters through tall grass to retrieve your quad. The crash looked bad — cartwheeling across the field at 60mph. But the quad is in one piece and you want to fly again. Don’t plug in yet.

A post-crash inspection is the most important habit in FPV. Skipping it turns a $20 repair into a $200 fire. This guide covers exactly what to check after every crash, in priority order, so you catch damage before it catches you.

## The Golden Rule: Inspect Before You Power On

A crash can create internal shorts that aren’t visible. If you plug in a battery without inspection and the quad smokes, you’ve turned a repairable crash into a burned ESC, dead flight controller, or worse.

**After EVERY crash — even a “soft” one — spend 60 seconds on this checklist.**

## The 10-Point Post-Crash Inspection

### 1. Visual Frame Inspection (10 seconds)

Walk around the quad and look at every arm and plate:

**Pro tip**: Flex each arm gently. Cracked carbon fiber often makes a faint creaking sound before it fails completely.

### 2. Motor Inspection (15 seconds)

Spin each motor by hand:

– **Does it spin freely?** Any grinding, clicking, or resistance = bearing damage or bent bell.
– **Does the bell wobble?** Hold the motor base and spin the bell — watch the air gap between bell and stator. Any wobble = bent shaft or bell.
– **Are all magnets in place?** Look through the top of the bell. Missing or cracked magnets = replace motor.
– **Are the motor wires intact?** Check where wires exit the motor base. Nicks or cuts in the enamel coating will cause shorts.

**Gritty bearing test**: Spin the motor and hold it near your ear. A healthy motor is nearly silent. A gritty or grinding sound means bearing replacement or new motor.

### 3. Propeller Inspection (10 seconds)

Even if they look fine:

– **Bend each blade** slightly — hairline cracks at the hub are invisible when the prop is stationary
– **Check the hub** for cracks radiating from the center hole
– **Check blade tips** for chips — a chipped tip creates massive vibration at 30,000 RPM
– **Replace any prop that touched the ground** during the crash (even if it looks fine)

Props are $3. Motors and ESCs are $15-40. Replace props liberally.

### 4. Battery Inspection (CRITICAL — 15 seconds)

The battery took the same impact as the quad. **A punctured LiPo can ignite.**

– **Check for puffing**: Is the pack swollen? Any cell puffing = retire immediately.
– **Check for punctures**: Run your finger along all sides. Any cut in the outer wrapper needs closer inspection — peel back the wrapper and look for damage to the silver pouch underneath.
– **Check balance lead**: Are all wires still attached at the connector and at the cell tabs?
– **Check main leads**: Is the XT60/XT30 connector intact? Are the wires nicked?

**If you smell a sweet, solvent-like odor**: The LiPo pouch is punctured. Place the battery outside on concrete immediately. Do not charge, do not use, do not bring indoors.

### 5. Antenna Inspection (5 seconds)

– **VTX antenna**: Is it still connected? Check the connector type — SMA can unscrew, MMCX can pop off, u.FL can unclip.
– **RX antennas**: Are the active elements (exposed silver tips) still intact? If the active element is cut or missing, your range drops to zero.
– **Antenna tubes**: Cracked or missing? Replace. Wires flapping in the wind will fatigue and break.

### 6. Internal Wiring Check (10 seconds)

Remove the top plate or look through the frame gaps:

– **Any pinched wires** between carbon plates or standoffs? Pinched insulation = short waiting to happen.
– **Any pulled solder joints?** Gently tug each wire at its solder pad. A cold joint may hold until vibration breaks it.
– **Any components knocked off?** Look for missing capacitors, resistors, or diodes on the FC and ESC.
– **Stack screws**: Are the nylon nuts still on? Did the stack shift?

### 7. Capacitor Check (5 seconds)

The electrolytic capacitor on your battery pads absorbs voltage spikes. If it’s damaged:

– **Dented or bulging can**: Replace immediately. Damaged caps can short internally.
– **Legs bent or broken**: Replace. An intermittent capacitor connection is worse than no capacitor.
– **Capacitor body touching frame**: Add heat shrink or reposition. A metal can touching carbon fiber can short.

### 8. Camera and VTX Check (10 seconds)

– **Camera lens**: Cracked, scratched, or knocked out of focus? A cracked lens element will show as a dark spot or blur in your video feed.
– **Camera mount**: Still tight? A loose camera changes angle mid-flight.
– **VTX antenna connector on the VTX board**: These SMD connectors can rip clean off the PCB. Inspect the solder joints.

### 9. Smoke Stopper Test (5 seconds) — MANDATORY BEFORE POWERING ON

Plug your smoke stopper between the battery and the quad:

1. Connect smoke stopper to quad.
2. Connect battery to smoke stopper.
3. Watch the smoke stopper LED:
– **Green / dim bulb**: No short. Safe to proceed.
– **Bright red / bright bulb**: SHORT DETECTED. Unplug immediately. Find and fix the short before proceeding.

If you don’t own a smoke stopper, buy one. It’s the best $8 insurance in FPV.

### 10. First Arm and Hover Test (In Your Hand — 15 seconds)

If the smoke stopper passes:

1. Connect battery directly.
2. Listen for normal ESC startup tones (3 short + 2 long).
3. Arm the quad while holding it firmly (overhead, away from face).
4. Give slight throttle — feel for abnormal vibration.
5. Move pitch/roll sticks slightly — check motor response is balanced.
6. Disarm. Check motor and ESC temperatures with your finger. One hot ESC means a problem.

## UAVModel: Repairs Made Easy

Crashes are inevitable. Being able to repair quickly is what gets you back in the air. **uavmodel.com** stocks the replacement parts every pilot needs: spare arms, motor bells, prop nuts, standoffs, capacitors, and full replacement motors. Having a spare arm and a spare motor in your bag means a field repair instead of a drive home. Browse UAVModel’s spare parts section before your next session.

## YouTube: FPV Post-Crash Inspection Walkthrough

## Printable Field Checklist

Print this and keep it in your flight bag:

“`
POST-CRASH CHECKLIST:
☐ 1. Frame: Arms crack-free? Standoffs straight? Screws tight?
☐ 2. Motors: Spin freely? No grinding? Bell not bent? Wires intact?
☐ 3. Props: Hub cracks? Blade chips? Replace if they touched ground.
☐ 4. Battery: Puffed? Punctured? Sweet smell? (If yes → OUTSIDE NOW)
☐ 5. Antennas: VTX connected? RX active elements intact?
☐ 6. Wiring: Pinched wires? Pulled joints? Missing components?
☐ 7. Capacitor: Dented? Legs intact? Not touching frame?
☐ 8. Camera: Lens OK? Mount tight?
☐ 9. SMOKE STOPPER TEST (MANDATORY)
☐ 10. Hand hover test — normal vibration, ESC temps OK
“`

## When to Retire vs. Repair

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