"To improve aviation safety and to enhance scientific knowledge"

 

 

A Preliminary Study of Sixty Four Pilot Sighting Reports

Involving Alleged Electromagnetic Effects on Aircraft Systems [1]

 

      Richard F. Haines                                            Dominique F. Weinstein

 Los Altos, California                                                    Paris, France

 

    Copyright

       May 15, 2001

 

 

Abstract

      This preliminary report presents the findings of a comprehensive review of over fifty years of pilot reports in which permanent or transient electromagnetic (EM) effects occurred on in-flight aircraft systems allegedly as a direct or indirect result of the relatively near presence of one or more unidentified aerial phenomena (UAP). From a total of 1,300 reports sixty four (5%) were found that involved E-M effects.  Of these, thirty three (3 %) case reports contained 58 different E-M effects that fit the authors’ level 1 (highest) acceptance criteria.  Of these cases, the (fundamental) aircraft system most frequently affected was electrical (46 cases; 79%) followed by power plant (4 cases; 6%), on-board radar contact (4 cases; 6%), and miscellaneous (3 cases; 5%).  Of the forty six electrical system interference cases the radio’s function was affected most often (18 cases; 39%) followed by compass reading errors in 12 cases (26%). In general, it was found that general aviation aircraft were more likely to be affected than commercial or military type aircraft.  The most commonly reported UAP shape is round or oval. Interestingly, most of the E-M effects occurred when the UAP was nearby the aircraft. These findings are potentially important and deserve further in-depth study and confirmation by obtaining additional high quality aviation reports

   


 

                                                                                       Introduction

     Civilian, military, and commercial pilots have reported seeing unidentified aerial phenomena (UAP) for over fifty years.  These ubiguitous phenomena have been reported by air crews of almost every nation on earth and have led, in the past, to the establishment of several official civilian or military review boards or study groups (e.g., Chile, France, Soviet Union, United States of America). The interested reader should consult (Haines, 1983,  1992, 1993, 1994, 2000; Hall, 1964; Jacobs, 1975, Gillmor, 1968; Ruppelt, 1956) for examples of such accounts.

      As interesting as these general pilot sighting reports are there is another type of aviation event that is even more interesting and of more potential importance to those who are technically and scientifically minded, viz., UAP-related electro-magnetic effects on board the aircraft that could have impacted flight safety. The primary purpose of this paper is to review over fifty years of pilot reports which both authors have compiled over the years. These cases involve one or more on-board systems (navigation, guidance and control equipment, cockpit displays, circuit breakers, other electro-magnetically controlled systems) were influenced allegedly when one or more UAP were physically near the aircraft.  Clearly, it is both the physical proximity of the UAP as well as the transient nature of these E-M effects that make them so interesting. If it can be shown that there is a direct, range-related influence of UAP on cockpit (and other) on-board systems then the application of traditional laws of physics is appropriate. And, if these effects last only as long as the UAP is near the aircraft and return to normal function after the UAP departs, it suggests that they are caused directly by the UAP and are not random or unrelated energy interactions within the airborne system(s). The following section discusses how these cases were selected for study?

 

- Electro-Magnetic Case Acceptance Rating Methodology  (EMCARM) -

 This methodology provides a set of rating criteria for pilot reports involving EM effects. EMCARM represents a clear and relatively simple set of acceptance guidelines with which to accept or reject candidate EM reports. Table 1 presents the eleven factors and their ratings.

 

Table  1

 EMCARM Evaluation Factors

Number Factor Criterion Rating
1. Pilot Flying Experience > 5000 hrs. (commercial or military) 4
     1 to 5000 hrs. (commercial / military)          3
    > 1000 hrs. (private)                                   2
    1 – 1000 hrs (private)                      1
    Not mentioned                                           0
2. Number of Aircrew Witnesses >3 3
    2 pilots (or 2 rated aircrew) 2
    1 pilot/aircrew 1
    Not mentioned 0
3. Aircraft and UAP Altitude Scoring Matrix  (use number in appropriate cell)    

 

50

0

1

2

4

2

 

Aircraft Altitude

30

0

1

4

2

0

 

(ft x 1000)

10

1

4

3

1

0

 

 

1

3

2

1

0

0

 

 

 

1

10

30

50

70

 

 

 

UAP Altitude (ft. x 1000)

Number Factor Criterion Rating
4. Separation Distance (d) between Aircraft and UAP Very near (within 30 feet) 4
    Moderately near (30<d<100 feet) 3
    Moderately distant (100<d<5000 ft) 2
    Very distant (> 5000 feet) 1
    Can’t be determined/not mentioned 0
5. Ambient illumination Full daylight 3
    Very dim ( incl. dawn or dusk) 2
    Dark 1
    Not mentioned 0
6. Duration of EM Effect(s) Only during closest approach and ceased after UAP departed 4
    Appeared when UAP arrived and did not return to normal after UAP departed 2
7. Severity of EM Effect(s) More than 3 independent sub-systems affected 4
    1 sub-system affected 3
    1 or more sub-systems had to be replaced 3
    Not specified 0
8. Sighting Duration (t) >90 minutes 5
    10<t<60 minutes 4
    2<t<10 minutes 3
    0.5<t<2 minutes 2
    <0.5 minutes 1
    Not specified 0
9. Aircraft Ground  Speed (v) > Mach 1.0 3
  (Note: UAP must be near and maintaining station with aircraft to validly apply these ratings) 250<v<600 mph (~Mach 1) 2
    Stall<v<250 mph 1
    If not specified (private single engine aircraft=1; twin engine jet aircraft=2) 1 or 2
10. UAP Ground Speed Ditto number 9, above  
11. UAP Maneuverability UAP circles aircraft that is flying on constant heading 3
  (Relative to aircraft) UAP maintains “station” precisely as aircraft changes heading, altitude, etc. 3
  (UAP must be nearby) UAP executes high precision flight, high-g turns, hi accel. stops/starts over relatively long periods of time typ. > 5 min.) 3
    other maneuvers 3
    Not specified 0
       
       
    MAXIMUM SCORE 40
       

In this report, a Category 1 incident achieved an ENCARM score of 22 or more and was included in the study while a Category 2 incident had a score of less than 22 and was not included.  Category 3 incidents possessed scores between 20 and 21 and  were reserved for possible future investigation as more information became available. The Category 1 threshold score is admittedly somewhat arbitrary yet it does provide an approximate boundary between the top 40%.

It should be understood that this type of report rating methodology is most useful in evaluating a large number of cases, each of which differs along different lines of evidence.

Since no two cases are likely to be the same EMCARM employs enough different factors and criteria to bridge the broad array of case detail differences. Of course, one practical difficulty in applying this methodology is that many reports lack sufficient detail to complete all eleven factors or to judge them accurately.  This calls for significantly more rigorous data collection in the future.

 

E-M Effect Taxonomy

 One of the authors (R.F.H.) developed a descriptive aircraft systems taxonomy that was found to be useful in his ongoing AirCatalogue (AIRCAT) research. This taxonomy (cf. Appendix) provides a three level designation system so that on-board systems can be grouped according to common functions in computer-based analyses.  It was found to be useful in the present study.

 Consistent use of such a two- or three-letter code will efficiently capture a large majority of EM effects experienced on-board an aircraft. Of course multiple codes should be used if more than one system was affected.  Aviation specialists and mechanics can study these codes and learn what they share in common (besides electrical current and pulse frequency) and thereby possibly understand what might have caused the system effect(s).

 

Preliminary Results

 The following subjects are discussed in this section: (A) Statistical Overview of Thirty Three (52%) of the total Sixty Four Cases Scoring 22 or Higher on the EMCARM Rating Scale, (B) Study of E-M Effects – Experimental Questions, (C). How E-M Effects Are Distributed by Type of Aircraft, (D). Correlation Between Specific E-M Effects and Distance to UAP, (E) Relationship between E-M Effects and Reported UAP Maneuverability, (F) Position of UAP relative to the Aircraft and E-M Effects.

  

A. Statistical Overview of Thirty Three (52%) of the

Total Sixty Four Cases Scoring 22 or Higher on the EMCARM Rating Scale.

 

Fifty seven E-M cases were subjected to the EMCARM "filter.” The results follow:

Scores

Number of Cases
Minimum score 9 1
Maximum score 31 2
Mean score 22 5
From 22 to 31 33 cases (category 1)
From 9 to 21 31 cases (category 2)[2]

EMCARM Criteria Selection Results for the 33 “Category 1”  cases:

 

Factor 1: Pilot Flying Experience

  Number of Cases
>500 hrs. (Commercial Rated Pilot – military pilot) 6
1-500 hrs (commercial pilot – military pilot) 2
>1000 hrs (private pilot) 5
1-1000 hrs (Private pilot) 6
Not mentioned 14

The "not mentioned" factor has the highest score (14). High time commercial pilots also tend to see (or only report?) more than do low time pilots.

 

Factor 2 : Number of Aircrew Witnesses

  Number of Cases
>3 pilots / aircrew members 10
2 pilots (or 2 rated crew members) 12
1 pilot / aircrew member 11
Not mentioned 0

 

Factor 3 : Aircraft and UAP Altitude

 

altitude

nb of a/c

nb of UAP

<1000 ft

 0

 0

<10000 ft

21

14

<30000 ft

09

06

<50000 ft

03

03

not specified

0

10

__________________________________________________________

  

Factor 4 : Aircraft and UAP Separation Distance (d)

  Number of Cases
Very near (within 30 ft)    3
Moderately near (30<d<100 ft)     2
Moderately distant (100<d<5000 ft) 13
Very distant (>5000 ft) 7
Not mentioned 8

Separation distance between aircraft and UAP is probably the single most important factor for E-M cases. The above table shows that 18 cases occurred at a distance of from 10 and 5,000 feet.

  

Factor 5 : Ambient illumination

  Number of Cases
Full daylight   14
Very dim (dawn or dusk)     0
Darkness      18
Not mentioned 1

 

Factor 6 : E-M Effect Duration

  Number of Cases
Only during closest approach phase (thereafter E-M symptoms disappeared) 30
E-M symptoms appeared with UAP  (and did not return to normal after UFO departure) 1
Not mentioned 2

      The main results for this factor indicate that these effects were transient in most of the cases - 30 of the 33 (91%). In only one case did the E-M effects not return to normal. This indicates that E-M symptoms were very likely caused by the UAP.

 

Factor 7 : E-M Effect Severity

  Number of Cases
More than 3 independent sub-systems affected 2
1 sub-system affected  31
1 or more sub-systems had to be replaced 0
Not specified  0

Comments : In most of the 33 cases only one or two sub-systems of the aircraft were affected by E-M effects. But for case n°16 (24/03/1955), 9 different sub-systems were affected (electrical system and power plant).

  

Factor 8 : Sighting Duration (t)

  Number of Cases
>60 min. 1
10<t<60 min. 11
2<t<10 min. 13
0.5<t<2 min. 3
<0.5 min. 3
Not specified  2

 

Factor 9 : Aircraft Ground Speed (v)

  Number of Cases
>Mach 1.0 2
250<v<600 mph (Mach.1) 7
Stall<v<250 mph. 23
Not specified     1

During E-M effects, Aircraft ground speed was, for most of the cases (23 among 33), between stall and 250 mph. More exactly, for 19 cases the aircraft speed was between 100 and 250 mph. The minimum aircraft speed was: 80 mph.

 

 Factor 10 : UAP Ground Speed (v)

  Number of Cases
>Mach 1.0 3
250<v<600 mph (Mach.1) 7
Stall<v<250 mph. 13
Not specified     10

There are fewer cases where the speed of the UAP was mentioned, but when it was (23 cases) the speed of the UAP and the speed of the aircraft were the same in 19 cases (83%).

 

 Factor 11 : UAP Maneuverability - Relative to Aircraft  (UAP must be nearby aircraft)

 

UAP Maneuver Number of Cases
UAP circles aircraft when aircraft flies straight 2
UAP flies “station” (paces) precisely as aircraft changes heading, altitude, etc. 16
UAP executes high precision flight, high-g turns, high acceleration, stop/starts for relatively long period of time (e.g.,>5 minutes) 8
Other maneuvers    7
Not specified 0
   
   

 

B.  Study of E-M Effects – experimental questions

Distribution of E-M effects for the 33 "category 1" cases, using Haines' Airplane E-M Effects Nomenclature / Taxonomy list:

 

A. Distribution of E-M Effects symptoms for each cases (including EMCARM aircraft/UAP separation distance criteria 4)

  

Case

Date

Location

Type

of a/c*

distance

a/c – UAP

(ft)

EMCARM

factor 4

**

No of

EM

effects

EME Type

Level1 (Level2)

EMCARM

total

score

3

 00/02/44

Australia

M

100

MD

2

E(D)+E(R)

27

8

24/07/49

USA

P

1500

MD

1

P(P)

23

11

10/02/51

Canada

M

100

MD

2

E(D)+E(M)

31

12

00/04/51

USA

P

 

0

3

E(M)+P(P)+M(O)

24

13

18/09/51

Canada

M

170184

VD

1

E(D)+R(A)