Camera & EFB Mounts

I was aware of an STC for GoPro cameras to be mounted externally on specific aircraft types however I knew that it wasn’t cheap so not viable for the typical GA aircraft owner. So, while visiting Oshkosh in July 2015, I was pleasantly surprised to see this company: Flight Fix http://www.flightflixcameras.com/ They mentioned that in the USA allowed their mounts to be used externally without an STC or other engineering approval as they were temporary. That surprised me as I had seen an FAA Safety Briefing on the subject http://www.faa.gov/news/safety_briefing/2014/media/janfeb2014.pdf

FAAsafety1

FAAsafety2

There are some inconsistencies with this internal FAA memo of about the same time: FAA-camera-memo 13Mar2014. I see that many are taking that memo as equivalent to law. Good that the FAA has since clarified that in their May/June 2016 Safety Brief:13263750_10154192052598454_919621119467713188_n

CASA’s view of the requirements for external camera installations is defined in Reference 1 (at least for certified airplanes).

CASA231

Quite clear isn’t it.

Reference 2 is quite general with much more information and includes the following clear statement regarding camera installations:

CASA2108

With respect to external camera mounts it is consistent with Reference 1. It also provides some guidance on internal camera mounts. Note that there is nothing in either of those Advisory Circulars which distinguishes between permanent and temporary installations as far as the requirement for needing specific approval – as an engineer I don’t have a problem with that.

Let’s move onto Electronic Flight Bags. From an engineering point of view the considerations are quite similar to a camera of about the same size. Obviously we are only interested in internal installations so we have all of the requirements from Reference 2 to consider.

But now look at Reference 3.

CASA2331

If attached to the aircraft structure then an EFB mount requires approval. Let’s consider two simple aeroplanes for discussion.

Firstly, the Airtourer. Where can we mount an EFB that is not aircraft structure?

I know that windscreens and windows have been used by some people however, being a former student of Henry Millicer, I know that the canopy and windscreen take about 20% of the total lift so therefore they are both part of the structure. The instrument panel must support the instruments and avionics up to the design loads so also a structural part. The instrument panel coaming supports the instrument panel and, as Henry told me, in an accident it was designed to fail at a particular load to allow the instrument panel to move forward.

Doesn’t leave many options for the Airtourer apart from the internal cabin trim.

Secondly, the Citabria/Decathlon series. Is the windscreen and skylight part of the structure? I’d say so as there are quite high loads on them in flight. Instrument panel, as above, needs to support instruments and avionics so that is structural. Interior trim is not really viable. Window and door maybe? There are some very nice steel tubes in the cabin however that is primary structure so definitely cannot be used to attach an EFB notwithstanding that people hang onto them during aerobatics. Not many options there to mount an EFB either.

Para 7.4.1 refers to temporary as “not considered to be airworthy” and must be stowed during take-off and landing, turbulent conditions etc. Presumably somewhere there is an exemption for temporary EFB mounts (whether temporary or permanent) to be attached to non-structural parts without approval? I cannot find it on the CASA website.

Furthermore, it gives Velcro and suction mounts as examples of temporary mounts but no other guidance – I have seen GoPro mounts which require a screwdriver which I would regard as temporary?

From and engineering point of view, the mounting of a small camera internally is quite similar to an EFB. We don’t appear to have any exemption (not that I believe one exists for EFBs) allowing pilots to temporarily mount small cameras internally on non-structural parts. Regardless, pilots like to get video in situations where Reference 3 would requires it be stowed.

So, any camera mounted on an aircraft, whether external or internal and whether permanent or temporary requires approval.

Personally, I use a kneeboard for my main EFB and my backup EFB goes in a pocket.

I hold a camera or fix it to my headset rather than mount it on an airframe part.

Finally, Flight Fix told me that they expect to have an STC within a year (i.e. at Oshkosh in 2016) for their external camera mounts.

PS Feb 2016: I have just seen this very sensible CAP 1369 Policy and guidance on mounting cameras on aircraft from the UK CAA.

References

  1. CASA AC 23-1 v1.0 Airspeed airworthiness standards for the installation of equipment that protrudes into the airflow
  2. CASA AC 21-08 v1.0 Approval of modification and repair designs under Subpart 21.M
  3. CASA CAAP 233-1(1) Electronic Flight Bags

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