Showing posts with label accident. Show all posts
Showing posts with label accident. Show all posts

Monday, January 12, 2026

Flyaway Drone

Rueful…
Roderick: How’s the ATTI mode practice shaping up? Still flying without the satellite safety net?
Eddie: It was going reasonably well… until this morning. Two minutes after takeoff, one tidy practice circle, and then it headed straight out over the mudflats like it had somewhere to be. Crashed out there.
Roderick: Ouch. Did you manage to retrieve it?
Eddie: All the pieces, yes. Broken landing gear, snapped prop arm, and the battery contacts are full of silt.
Roderick: All right. One, compass or IMU disagreement. If the sensors can’t agree, the drone can fly in the wrong direction.
Eddie: I calibrated on Saturday, though not there.
Roderick: Second: GPS instability or mode confusion. Over mudflats you can get reflections, brief dropouts, and sudden transitions the control logic doesn’t handle well. Or radio interference. But there’s also sticky or drifting controller sticks. A bit of grit, wear, or moisture and the stick doesn’t quite centre.
Eddie: So my thumbs stopped, but the controller kept send a wrong signal?
Roderick: Precisely. ATTI doesn’t make flying more difficult. And it removes excuses.

_____________
Voice-over
There was more but Roderick ends by suggesting a thorough checklist before takeoff. 

1. Controller first — always

  • Power on the controller before the aircraft.
  • Move both sticks slowly through full travel; feel for grit, hesitation, or lazy centring.
  • If a stick doesn’t snap back cleanly to neutral, stop. Clean it or swap controllers.

2. Calibrate with intent, not habit

  • Compass and IMU only if needed — but do calibrate when changing locations or surfaces.
  • Avoid metal tables, vehicles, and reinforced concrete. ATTI exposes sloppy calibration instantly.

3. Know the wind before you fly

  • Watch grass, flags, smoke, or ripples — not the weather app.
  • Pick a ground reference and imagine how fast the drone would drift in 10 seconds if you let go.

4. Choose the right airspace for ATTI

  • Wide, empty, and boring beats scenic every time.
  • Avoid water, mudflats, cliffs, and anything that creates optical or RF weirdness.

5. Confirm the mode — twice

  • Visually verify ATTI mode on the display.
  • Say it out loud if necessary. Pilots skip fewer steps when they sound faintly ridiculous.

6. Short hover test (10–15 seconds)

  • Lift to chest height.
  • Hands off the sticks briefly.
  • Observe drift direction and speed before committing to manoeuvres.

7. Keep manoeuvres small at first

  • Circles, figure-eights, and slides — all close and slow.
  • ATTI rewards smooth inputs, not ambition.

8. Maintain a mental “abort box”

  • Decide before takeoff where you’ll descend if things feel wrong.
  • In ATTI, landing early is not failure — it’s judgment.

9. One variable at a time

  • Don’t combine new modes, new locations, new wind, and new batteries in one flight.
  • ATTI is a teacher; don’t shout over it.

10. End on a success

  • Finish the session while everything still feels calm and predictable.
  • Fatigue and confidence spike at the same time — that’s when mistakes happen.

Saturday, February 22, 2025

Elevator Malfunction


A bump, lights flicker and elevator stops…
Lana: (presses the alarm) Hello? We're stuck in the elevator. Can anyone hear us?
Tom: Press the ground floor. I'm Tom, by the way. I live on the 7th floor.
Lana: I'm Lana. I live on the 3rd floor. Dramatic way to meet your neighbors, huh?
Tom: Yeah, definitely. How long have you lived here?
Lana: Oh, the lights just went out. Let's hope this works.
Voice from Speaker: The elevator should be resetting now. Please remain calm.
Tom: There we go! The lights are back.
Lana: And the doors are open! We made it.
_____________
Voice-over
Could have been a power fluctuation, safety malfunction, wiring problem, who knows. Management were concerned and apologized, then called the elevator company. So, stay calm, press alarm or use cell phone, try pressing other floors, or maybe press another floor for a minute or two to reset the system.

Wednesday, November 13, 2024

Factors at an Accident

Two friends run into each other out walking… 
Janine: I didn’t see the actual accident.
Winifred: The car hit the bollards lining the road, flipped in the air several times, and just missed the palm trees. It finally came to rest here, a hundred meters away.
Janine: I arrived just as the ambulances arrived. That one looks seriously hurt.
Winifred: So reckless.
Janine: I wouldn’t be surprised if speed and drugs were involved. 
Winifred: Not at all unlikely in this area. Fourth such accident in this street this year. All the usual victims.
Janine: Usual?
Winifred: Ones whose age, race, tattoos and gender media are not allowed to report.
Janine: They need guidance, maybe from tribal elders or community leaders.
Winifred: Better road safety education, yes, but accidents will still occur.
__________
Voice-over
A fine line between letting the young learn from their mistakes and giving them guidance. In a walking society, you pick yourself up when you fall. A car society is different.

Wednesday, March 20, 2024

A cluster of contributing events

After a near miss near home…

Penelope: You nearly got bowled by that cyclist. You didn’t see him?

Adam: Nope. He just appeared out of the blue, going like a bat out of hell.

Penelope: Distracted?

Adam: You can say that again. When I think about, there’s this howling wind, the lady asking me for directions, the bus coming and maybe not going to stop. Sure, I was distracted.

Penelope: Lucky with all those converging hazards swirling about you got off scot-free.

Adam: But traumatized.

__________

Voice-over

In an accident report, a phrase like "a cluster of contributing factors" might have been used. Or concurrent complications. Or even fortuitous event (meaning unforeseen or chance event).

Wednesday, September 10, 2014

Freak Kitchen Accident


Knife Drop…
While slicing mushrooms, I put the knife down to reach for the cooking oil. The knife fell from the bench. I tensed, waiting for it to slice into my foot. No flash of blinding pain, but all the lights went out. The knife had cut through the wire on the floor. Not my foot. Lucky!

___________
Voice-over
But there was damage. When the breaker was reset, the top-of-the-line houchou had a semicircular burn in its blade. Resharpening that will be expensive, even if doable.

From now on, I will not run extension cables across the floor and will wear shoes when cooking.

No wonder chefs acquire burns and cuts through freak accidents.

Saturday, January 26, 2008

Holiday accident

Lionel comes in with tragic news.

Arthur: Hello. We got a call from Michael. What's up?

Lionel: Kerry. She was killed.


Arthur: No!


Lionel: Car accident.


Arthur: When?


Lionel: Wednesday.


Arthur: How did it happen?


Lionel: Horse bolted onto the highway. Crushed the roof in. She was in the passengers seat. Head injuries. Died at the scene.


Arthur: Will you stay over?


Lionel: Got to get over there. They're closing the casket tonight. Funeral tomorrow. Only 19.

____________

Authorial aside: Arthur suspects something is amiss, Lionel, related to the accident victim, is suffering and keeps words to a minimum and descriptions cryptic. As males often do when coping with grief. A female bridge into expressing grief might be along the lines of “Life’s not fair” or “Why do these things happen?”