Parts · Electrical power

Guard

219 failure reports named the guard in the last ten years, 500 since 1998, most often on the Boeing 737; the condition most often found was "broken". 125 FAA approvals let 25 companies make a replacement guard, Amsafe Bridport holding the most (22).

Reports by year

Reports by year, as a table

	reports
1998	4
1999	7
2000	6
2001	16
2002	5
2003	5
2004	5
2005	3
2006	8
2007	16
2008	11
2009	20
2010	42
2011	33
2012	26
2013	35
2014	25
2015	14
2016	21
2017	41
2018	25
2019	23
2020	15
2021	21
2022	14
2023	5
2024	13
2025	23
2026	18

Which system the reports file it under last ten years

Electrical power167Airframe structure33Cabin, seats and restraints8Landing gear5Flight controls3Emergency equipment2Instruments and avionics1

Reports by system, as a table

	reports
Electrical power	167
Airframe structure	33
Cabin, seats and restraints	8
Landing gear	5
Flight controls	3
Emergency equipment	2
Instruments and avionics	1

Models most often reporting it last ten years

Boeing 73771Boeing 76737Boeing 75734Boeing 77724Bombardier CL-600 Challenger and CRJ16Bombardier DHC-8 Dash 8 and Q40012Boeing 787 Dreamliner8Boeing 7474Mcdonnell Douglas MD-113Airbus A3001Airbus A3211Airbus A3301

Models most reported, as a table

	reports
Boeing 737	71
Boeing 767	37
Boeing 757	34
Boeing 777	24
Bombardier CL-600 Challenger and CRJ	16
Bombardier DHC-8 Dash 8 and Q400	12
Boeing 787 Dreamliner	8
Boeing 747	4
Mcdonnell Douglas MD-11	3
Airbus A300	1
Airbus A321	1
Airbus A330	1

How it failed the condition found, last ten years

broken64damaged26missing21cracked15loose12out of adjust11inoperative10faulty9out of position7defective5

Conditions found, as a table

	reports
broken	64
damaged	26
missing	21
cracked	15
loose	12
out of adjust	11
inoperative	10
faulty	9
out of position	7
defective	5

Engines most often reporting it

Pratt & Whitney Canada PW150A 1

Approved replacement parts 125 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a guard and sell it as an approved part for the models named. These are the companies holding such approvals for a guard:

Amsafe Bridport 22Aviation Materials Management INC 16Spirit Aerosystems INC 13Goodrich Landing Gear 8Gemini Engineering 7Garmin International INC 7Aviation Materials Management, INC. 7Aviation Materials Management, INC 7Sierra Hotel Aero INC 5Rotair Industries INC 4Helifab, INC. 4Gulfstream Aerospace LP 3Galaxy Aerospace CO LP 3Balloonacy LTD LLC 3Aero Arc INC 3Pma Design & Manufacturing 2Gemini Engineering INC 2Cub Crafters INC 2Triumph Composite Systems INC 1Seal Dynamics INC 1Plane Plastics LTD 1Panasonic Avionics Corporation 1Pacific Sky Supply INC 1Monogram Systems 1Matsushita Avionics Systems CORP 1

For these models most: Boeing 737 (34), Boeing 747 (31), Boeing 767 (18), Boeing 757 (8), Navion NAVION A (5), Mcdonnell Douglas MD-11 (5), Israel Aircraft Industries 1125 (4), Bell 206 JetRanger and LongRanger (4), Sikorsky S-61 (3), Boeing 777 (3), Piper PA-18 Super Cub (2), Israel Aircraft Industries ASTRA SPX (2).

Maker	Part	Replaces	Fits	Granted	Status
Garmin International INC	GUARD, AILERON PULLEY, CE525A, PMA 147-00236-00	Modification Part	See Approved Model... See Approved Model List for STC SA01844WI	2024-05-24	current
Garmin International INC	Guard, Pulley, EAL 117-02089-00	Modification Part	Textron Aviation Inc. Refer to STC SA01535WI-D	2023-09-25	current
Garmin International INC	Guard, Yaw, PA-34, PMA 147-00220-00	Modification Part	See Approved Model... See Approved Model List for STC SA01866WI	2023-09-25	current
Amsafe Bridport	GUARD 69B54819-1	69B54819-1	BOEING 747-100 SERIES, 747-200B SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 69B54819-2	69B54819-2	BOEING 747-100 SERIES, 747-200B SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 69B53240-1	69B53240-1	BOEING 747-100 SERIES, 747-200B SERIES, 747SR SERIES	2022-09-27	current
Amsafe Bridport	GUARD 69B54817-2	69B54817-2	BOEING 747-100 SERIES, 747-200B SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 69B53240-2	69B53240-2	BOEING 747-100 SERIES, 747-200B SERIES, 747SR SERIES	2022-09-27	current
Amsafe Bridport	GUARD 69B52050-2	69B52050-2	BOEING 747-100 SERIES, 747-200B SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 416U6007-2	416U6007-2	BOEING 747-200B SERIES, 747-200C SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 69B54817-1	69B54817-1	BOEING 747-100 SERIES, 747-200B SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 69B54818-2	69B54818-2	BOEING 747-100 SERIES, 747-200B SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 416U6007-1	416U6007-1	BOEING 747-200B SERIES, 747-200C SERIES,...	2022-09-27	current
Amsafe Bridport	GUARD 69B54817-3	69B54817-3	BOEING 747-100 SERIES, 747-200B SERIES,...	2022-09-27	current
Garmin International INC	GUARD, PITCH, 172, PMA 147-00216-00	Modification Part	See Approved Model... See Approved Model List for STC SA01866WI	2022-06-16	current
Garmin International INC	GUARD, MS20219-1 PULLEY, 0.28 INCH, PMA 117-01864-00	Modification Part	See Approved Model... See Approved Model List for STC SA01844WI	2021-12-06	current
Ams Heli Design LLC	Guard 1835241038	Modification Part	Leonardo S.p.a. A109S and AW109SP	2020-11-11	current
Garmin International INC	GUARD, PULLEY, PITCH SERVO, C210GHJ 117-01509-01	Modification Part	See Approved Model... See Approved Model List for STC SA01866WI	2020-07-20	current
Garmin International INC	GUARD, PULLEY, PITCH SERVO, PA-32RT 117-01509-00	Modification Part	See Approved Model... See Approved Model List for STC SA01866WI	2020-06-04	current
Seal Dynamics INC	Guard Assembly 411A2857-2SD	Boeing P/N 411A2857-2	The Boeing Company 737-700 Series, 737-800 Series, 737-8	2019-07-30	current
Monogram Systems	Guard, Service Panel Switch 19600-592	19600-592	Embraer ERJ 190-300	2018-12-13	current
Helifab, INC.	Guard Kit 2301-1	Modification Part	Bell Helicopter Textron 206L-1, L-3, L-4	2018-04-22	current
Helifab, INC.	Guard 2301-1	Modification Part	Bell Helicopter Textron 206L-1, L-3, L-4	2018-01-18	current
Erickson Incorporated DBA Erickson Air-Crane	Guard 214-052-057-105	214-052-057-105	BELL 214ST	2017-07-10	current
Jet Avion Corporation A Heico Aerospace Company	Guard ADA8519-1JA	Boeing P/N ADA8519-1	Boeing MD-11, MD-11F	2017-05-30	current
Able Engineering and Component Services, INC.	Guard Assembly AAM7255-1AA	AAM7255-1	The Boeing Company MD-11, MD-11F	2017-02-01	current active
Able Aerospace Services, INC.	Guard Assembly AAM7255-1AA	AAM7255-1	BOEING MD-11, MD-11F	2017-02-01	current active
Msp Aviation INC	Guard, Switch 400-111	400-111	Boeing 747-100, 747-200B, 747-200C	2016-01-28	current
Spirit Aerosystems INC	GUARD 65B40737-2	65B40737-2	Boeing 707-100 LONG BODY, 707-100B LONG...	2016-01-18	current
Plane Plastics LTD	Guard, Chain K5017565-3	5017565-1, 5017565-2, 5017565-3	Cessna 340, 340A, 401	2015-05-11	current
Panasonic Avionics Corporation	Guard, Toggle Switch 108747-01	Modification Part	Boeing 737-800	2015-04-19	current
Pma Design & Manufacturing	Guard Assembly PDMC4C1957-1	C4C1957-1	Viking Air Limited DHC-6-400 series	2015-03-06	current
Aviation Materials Management, INC	Guard Assy 69-37156-58	69-37156-58	Boeing 737-300 Series, 737-400 Series,...	2015-02-12	current
Aviation Materials Management, INC	Guard Assy 69-37156-57	69-37156-57	Boeing 737-300 Series, 737-400 Series,...	2015-02-12	current
Aviation Materials Management, INC	Guard Assy 218A4034-1	218A4034-1	Boeing 737-300 Series, 737-400 Series,...	2015-02-12	current
Aviation Materials Management, INC	Guard 275N2015-2	275N2015-2	Boeing 757-200 Series, 757-200PF Series,...	2015-02-12	current
Aviation Materials Management, INC	Guard 69-73336-1	69-73336-1	Boeing 737-300 Series, 737-400 Series,...	2015-02-12	current
Aviation Materials Management, INC	Guard 275A2603-1	275A2603-1	Boeing 737-600 Series, 737-700 Series,...	2015-02-12	current
Aviation Materials Management, INC	Guard 69-73336-2	69-73336-2	Boeing 737-300 Series, 737-400 Series,...	2015-02-12	current
Aviation Materials Management, INC.	Guard 275A2603-1	275A2603-1	Boeing 737-600 Series, 737-700 Series,...	2014-09-04	current
Aviation Materials Management, INC.	Guard 275N2015-2	275N2015-2	Boeing 757-200 Series, 757-200PF Series,...	2014-09-04	current
Aviation Materials Management, INC.	Guard Assy 69-37156-57	69-37156-57	Boeing 737-300 Series, 737-400 Series,...	2014-09-04	current
Aviation Materials Management, INC.	Guard Assy 69-37156-58	69-37156-58	Boeing 737-300 Series, 737-400 Series,...	2014-09-04	current
Aviation Materials Management, INC.	Guard Assy 218A4034-1	218A4034-1	Boeing 737-300 Series, 737-400 Series,...	2014-09-04	current
Aviation Materials Management, INC.	Guard 69-73336-1	69-73336-1	Boeing 737-300 Series, 737-400 Series,...	2014-09-04	current
Aviation Materials Management, INC.	Guard 69-73336-2	69-73336-2	Boeing 737-300 Series, 737-400 Series,...	2014-09-04	current
Rotair Industries INC	Guard R6125-61808-1	S6125-61808-1	Sikorsky S-61L, S-61N, S-61NM	2014-05-01	current
Cub Crafters INC	Guard 102735-01	Modification Part	Piper Aircraft, Inc. PA-18, PA -18S, PA-18 105 (Special)	2013-09-23	current
Rotair Industries INC	GUARD R1655-61167-0	S1655-61167-0	Sikorsky S-61L, S-61N, S-61NM	2013-09-23	current
Balloonacy LTD LLC	Guard - RB5 Long Skid ARP52894	52894	Aerostar Intl, Inc. All series with RB5 gondola installed	2013-07-07	current
Balloonacy LTD LLC	Guard - RB5 Short Skid ARP52893	52893	Aerostar Intl, Inc. All series with RB5 gondola installed	2013-07-07	current
Balloonacy LTD LLC	Guard - RB5 Center Skid ARP52895	52895	Aerostar Intl, Inc. All series with RB5 gondola installed	2013-07-07	current
Aviation Materials Management INC	GUARD 65B81853-6	65B81853-6	Boeing 747-100 SERIES, 747-100B SERIES,...	2013-03-25	current
Aviation Materials Management INC	GUARD 65-54231-1	65-54231-1	Boeing 737-100 SERIES, 737-200 SERIES,...	2013-03-25	current
Aviation Materials Management INC	Guard Assy 218A4034-1	218A4034-1	Boeing 737-300 Series, 737-400 Series,...	2013-03-24	current
Aviation Materials Management INC	Guard 69-73336-2	69-73336-2	Boeing 737-300 Series, 737-400 Series,...	2013-02-27	current
Aviation Materials Management INC	Guard Assy 69-37156-58	69-37156-58	Boeing 737-300 Series, 737-400 Series,...	2013-02-27	current
Aviation Materials Management INC	Guard Assy 69-37156-57	69-37156-57	Boeing 737-300 Series, 737-400 Series,...	2013-02-27	current
Aviation Materials Management INC	Guard 69-73336-1	69-73336-1	Boeing 737-300 Series, 737-400 Series,...	2013-02-27	current
Aviation Materials Management INC	Guard 275N2015-2	275N2015-2	Boeing 757-200 Series, 757-200PF Series,...	2013-02-26	current
Aviation Materials Management INC	Guard 275A2603-1	275A2603-1	Boeing 737-600 Series, 737-700 Series,...	2013-02-26	current
Helifab, INC.	Guard 2301-1	Modification Part	Bell Helicopter Textron 206L-1, L-3, L-4	2011-06-26	current
Amsafe Bridport	GUARD 69B54817-2	(69B54817-2)	BOEING 747-100 SERIES, 747-200B SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 69B54818-2	(69B54818-2)	BOEING 747-100 SERIES, 747-200B SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 69B53240-1	(69B53240-1)	BOEING 747-100 SERIES, 747-200B SERIES, 747SR SERIES	2011-02-03	current
Amsafe Bridport	GUARD 416U6007-1	(416U6007-1)	BOEING 747-200B SERIES, 747-200C SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 416U6007-2	(416U6007-2)	BOEING 747-200B SERIES, 747-200C SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 69B54817-3	(69B54817-3)	BOEING 747-100 SERIES, 747-200B SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 69B54817-1	(69B54817-1)	BOEING 747-100 SERIES, 747-200B SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 69B53240-2	(69B53240-2)	BOEING 747-100 SERIES, 747-200B SERIES, 747SR SERIES	2011-02-03	current
Amsafe Bridport	GUARD 69B52050-2	(69B52050-2)	BOEING 747-100 SERIES, 747-200B SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 69B54819-2	(69B54819-2)	BOEING 747-100 SERIES, 747-200B SERIES,...	2011-02-03	current
Amsafe Bridport	GUARD 69B54819-1	(69B54819-1)	BOEING 747-100 SERIES, 747-200B SERIES,...	2011-02-03	current
Honeywell International US LLC	Guard 60-4022-1	60-4022-1	EUROCOPTER BK117	2011-01-20	current
Aviation Materials Management INC	Guard 275N2015-2	275N2015-2	Boeing 757-200 Series, 757-200PF Series,...	2010-10-05	current
Aviation Materials Management INC	Guard 275A2603-1	275A2603-1	Boeing 737-600 Series, 737-700 Series,...	2010-10-05	current
Spirit Aerosystems INC	GUARD 65B40737-2	65B40737-2	Boeing 707-100 LONG BODY, 707-100B LONG...	2010-09-29	current
Aviation Materials Management INC	Guard Assy 218A4034-1	218A4034-1	Boeing 737-300 Series, 737-400 Series,...	2010-08-08	current
Spirit Aerosystems INC	GUARD 65B81992-2	65B81992-2	Boeing 737-600 SERIES, 737-700 SERIES,...	2010-07-22	current
Spirit Aerosystems INC	OUTER GUARD 251N4284-1	251N4284-1	Boeing 757-200 SERIES, 757-200PF SERIES,...	2010-03-07	current
Gemini Engineering	GUARD 275N2015-2	275N2015-2	Boeing 757-200 Series, 757-200PF Series,...	2009-11-15	current
Gemini Engineering	GUARD 65B81853-6	65B81853-6	Boeing 747-100 Series, 747-200B Series,...	2009-11-15	current
Gemini Engineering INC	GUARD 275N2015-2	275N2015-2	Boeing 757-200 Series, 757-200PF Series,...	2009-11-15	current
Gemini Engineering INC	GUARD 65B81853-6	65B81853-6	Boeing 747-100 Series, 747-200B Series,...	2009-11-15	current
Goodrich Landing Gear	GUARD 65B81853-1	65B81853-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-10-29	current
Goodrich Landing Gear	GUARD 65B81853-1	65B81853-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-10-29	current
Goodrich Landing Gear	GUARD - SWITCH 284T0743-1	284T0743-1	Boeing 747-200B SERIES, 767-200 SERIES,...	2009-10-29	current
Goodrich Landing Gear	GUARD - SWITCH 284T0743-2	284T0743-2	Boeing 767-200 SERIES, 767-300 SERIES,...	2009-10-29	current
Goodrich Landing Gear	GUARD - SWITCH 284T0743-2	284T0743-2	Boeing 767-200 SERIES, 767-300 SERIES,...	2009-10-29	current
Goodrich Landing Gear	GUARD - SWITCH 284T0743-1	284T0743-1	Boeing 747-200B SERIES, 767-200 SERIES,...	2009-10-29	current
Pma Design & Manufacturing	Guard Assembly PDMC4C1957-1	C4C1957-1	DeHavilland Viking Air Ltd) (DHC-6-100, 200, 300 series	2009-10-18	current
Gemini Engineering	OUTER GUARD 251N4284-1	251N4284-1	Boeing 757-200 Series, 757-200PF Series,...	2009-06-03	current
Gemini Engineering	GUARD 141T6300-9	141T6300-9	Boeing 767-200 Series, 767-300 Series,...	2009-06-03	current
Gemini Engineering	GUARD 140T2126-1	140T2126-1	Boeing 767-200 Series, 767-300 Series,...	2009-06-03	current
Gemini Engineering	GUARD 65-54231-1	65-54231-1	Boeing 737-100 Series, 737-200 Series,...	2009-06-03	current
Spirit Aerosystems INC	GUARD ASSY- 69-77090-4	69-77090-4	Boeing 737-300 SERIES, 737-400 SERIES,...	2009-03-30	current
Aero Parts Mart INC	Guard, Smoke Detector APM6102510	6102510	Saab Aircraft AB 340A (SAAB/SF340A), SAAB 340B	2009-03-17	current
Goodrich Landing Gear	GUARD 65-54231-1	65-54231-1	Boeing 737-100 SERIES, 737-200 SERIES,...	2008-11-24	current
Goodrich Landing Gear	GUARD 65-54231-1	65-54231-1	Boeing 737-100 SERIES, 737-200 SERIES,...	2008-11-24	current
Aero Arc INC	Guard Assy AAM7530-1	(AAM7530-1)	McDonnell Douglas MD-11 MD-11F	2007-08-22	current
Aero Arc INC	Guard Assy AAM7537-1	(AAM7537-1)	McDonnell Douglas MD-11 MD-11F	2007-08-22	current
Aero Arc INC	Guard Assy AAM7255-1	(AAM7255-1)	McDonnell Douglas DC-10-10 DC-10-10F DC-10-15 DC-10-30...	2007-08-22	current
Spirit Aerosystems INC	GUARD 141T6300Y8	141T6300-8	Boeing 767-200 SERIES, 767-300 SERIES,...	2007-04-02	current
Spirit Aerosystems INC	GUARD 141T6300Y9	141T6300-9	Boeing 767-200 SERIES, 767-300 SERIES,...	2007-04-02	current
Spirit Aerosystems INC	GUARD 141T6300-8	141T6300-8	Boeing 767-200 SERIES, 767-300 SERIES,...	2007-03-02	current
Spirit Aerosystems INC	GUARD 141T6300-9	141T6300-9	Boeing 767-200 SERIES, 767-300 SERIES,...	2007-03-02	current
Spirit Aerosystems INC	GUARD 141T6300Y9	141T6300-9	Boeing 767-200 SERIES, 767-300 SERIES,...	2006-09-11	current
Spirit Aerosystems INC	GUARD 141T6300Y8	141T6300-8	Boeing 767-200 SERIES, 767-300 SERIES,...	2006-09-11	current
Aviation Materials Management INC	Guard Assy 69-37156-57	69-37156-57	Boeing 737-300 Series, 737-400 Series,...	2006-08-24	current
Aviation Materials Management INC	Guard 69-73336-1	69-73336-1	Boeing 737-300 Series, 737-400 Series,...	2006-08-24	current
Aviation Materials Management INC	Guard 69-73336-2	69-73336-2	Boeing 737-300 Series, 737-400 Series,...	2006-08-24	current
Aviation Materials Management INC	Guard Assy 69-37156-58	69-37156-58	Boeing 737-300 Series, 737-400 Series,...	2006-08-24	current
Spirit Aerosystems INC	GUARD 141T6300-9	141T6300-9	Boeing 767-200 SERIES, 767-300 SERIES,...	2006-02-15	current
Spirit Aerosystems INC	GUARD 141T6300-8	141T6300-8	Boeing 767-200 SERIES, 767-300 SERIES,...	2006-02-15	current
Helifab, INC.	Guard 2301-1	Modification Part	Bell 206L-1, L-3, L-4	2005-11-30	current
Triumph Composite Systems INC	GUARD 258T1164-4	258T1164-4	Boeing 767-200 SERIES, 767-300 SERIES,...	2005-11-25	current
Bae Systems Controls INC	GUARD assembly 5756000-15	5756000-15	Boeing DC-9-31, DC-9-32, DC-9-32F	2005-04-05	current
Sierra Hotel Aero INC	Guard Assembly - Cabin Surface Controls 145-52402-3	Navion Aircraft Company, LTD. 145-52402-3, -4,...	Navion Aircraft Navion A, B, D	2003-12-17	current
Sierra Hotel Aero INC	Guard Assembly - Cabin Surface Controls 145-52402-34	Navion Aircraft Company, LTD. 145-52402-3, -4,...	Navion Aircraft Navion A, B, D	2003-12-17	current
Sierra Hotel Aero INC	Guard Assembly - Cabin Surface Controls 145-52402-30	Navion Aircraft Company, LTD. 145-52402-3, -4,...	Navion Aircraft Navion A, B, D	2003-12-17	current
Sierra Hotel Aero INC	Guard Assembly - Cabin Surface Controls 145-52402-4	Navion Aircraft Company, LTD. 145-52402-3, -4,...	Navion Aircraft Navion A, B, D	2003-12-17	current
Sierra Hotel Aero INC	Guard Assembly - Cabin Surface Controls 145-52402-7	Navion Aircraft Company, LTD. 145-52402-3, -4,...	Navion Aircraft Navion A, B, D	2003-12-17	current
Gemini Engineering	GUARD 66-12018	66-12018	Boeing 727-200 SERIES, '737-100 SERIES,...	2003-10-05	current
Fliegen Works INC	Guard AAI129-101	American Aeromotives AAI129-101	Bombardier, Inc. DHC-3	2003-08-10	current
Cub Crafters INC	Guard 102735	Modification Part	Piper PA-18, -18A, -18S	2001-09-04	current
Gulfstream Aerospace LP	Guard 25W817053-503	IAI 25W817053-503	Israel 1125 Westwind Astra	2001-06-06	current
Gulfstream Aerospace LP	Guard 25W817053-505	IAI 25W817053-505	Israel 1125 Westwind Astra, Astra SPX	2001-06-06	current
Gulfstream Aerospace LP	Guard 823676-47	IAI 5823676-47	Israel 1124, 1124A	2001-06-06	current
Galaxy Aerospace CO LP	Guard 25W817053-505	IAI 25W817053-505	Israel 1125 Westwind Astra, Astra SPX	2001-05-08	current
Galaxy Aerospace CO LP	Guard 25W817053-503	IAI 25W817053-503	Israel 1125 Westwind Astra	2001-05-08	current
Galaxy Aerospace CO LP	Guard 823676-47	IAI 5823676-47	Israel 1124, 1124A	2001-05-08	current
Rotair Industries INC	Guard R65113-07108-102	65113-07108-102	Sikorsky S64A/E/F	2000-07-17	current
Matsushita Avionics Systems CORP	Guard, Toggle Switch 108747-01	Modification Part	Boeing 737-800	2000-01-13	current
Pacific Sky Supply INC	Guard - Snap Ring 6819281P	Allison 6819281	Allison Engine 501-D13, 501-D13A, 501-D13D	1995-03-21	current
Rotair Industries INC	Guard R1655-61167-0	Sikorsky S1655-61167-0	Sikorsky S-61L/S-61N/S-61NM/S-61R (TC 1H15)	1992-05-26	current
Knisley Welding INC	Guard K114-530056-3	Beech 114-530056-3	Beech Raytheon) (1900, 1900C	1991-10-07	current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.