Medical Certificate Class 1 vs Class 2: What You Need to Know

Before you can fly solo or carry passengers in Hong Kong, you must hold a valid medical certificate issued by the Civil Aviation Department (CAD) or an approved medical examiner. The type of certificate you need depends on the licence you are pursuing. For a Private Pilot Licence (PPL), a Class 2 medical certificate is required. For a Commercial Pilot Licence (CPL) or Airline Transport Pilot Licence (ATPL), you need a Class 1 medical certificate. This article explains the differences in standards, examination procedures, validity periods, and costs, so you can plan your medical assessment accordingly.

Whether you are just starting your journey in general aviation in Hong Kong or aiming for a career in the cockpit, understanding the medical requirements is essential. The two classes are not interchangeable, and failing to hold the correct certificate can delay your training or grounding you.

What Are Class 1 and Class 2 Medical Certificates?

Medical certificates are issued under the Hong Kong Civil Aviation (Licensing of Air Pilots) Regulations (Cap. 448A). They are aligned with International Civil Aviation Organization (ICAO) Annex 1 standards. The two classes differ in the level of medical fitness required:

• Class 1 Medical Certificate, Required for commercial pilots (CPL, ATPL) and for pilots exercising the privileges of a multi-crew pilot licence (MPL). The standards are stricter, especially for vision, hearing, cardiovascular health, and mental fitness.
• Class 2 Medical Certificate, Required for private pilots (PPL) and for student pilots before their first solo flight. The standards are less stringent, reflecting the lower operational demands of non-commercial flying.

Both certificates are issued by CAD-approved Designated Aviation Medical Examiners (DAMEs) in Hong Kong. You must be examined by a DAME who is registered with the CAD. The examination must be conducted at an approved clinic or hospital.

Medical Standards: Key Differences

The medical standards for Class 1 and Class 2 are detailed in CAD’s Air Navigation (Licensing of Air Pilots) Regulations and the Manual of Civil Aviation Medicine. Below are the main areas where the two classes diverge.

Vision Requirements

Vision is one of the most common reasons for medical certificate denial or restriction. The standards are:

• Class 1: Distant visual acuity must be at least 6/9 (20/30) in each eye separately, with or without correction. If corrected, the correction must not exceed +3.0 dioptres. Near vision must be at least N5 at 30-50 cm. Colour vision must be normal (no colour deficiency that interferes with signal light recognition).
• Class 2: Distant visual acuity must be at least 6/12 (20/40) in each eye separately, with or without correction. No specific limit on correction strength, but the examiner must be satisfied that the correction is stable. Colour vision must be sufficient for safe operation (a colour perception test is required, but minor deficiencies may be acceptable if the pilot can distinguish aviation signal colours).

Hearing Requirements

Hearing standards are also stricter for Class 1:

• Class 1: Hearing loss in the better ear must not exceed 35 dB at any of the frequencies 500, 1000, 2000, and 3000 Hz. No hearing aid is permitted. The pilot must be able to hear a conversational voice at 2 metres with each ear.
• Class 2: Hearing loss in the better ear must not exceed 40 dB at the same frequencies. Hearing aids may be allowed if the pilot can demonstrate adequate speech discrimination.

Cardiovascular Health

Cardiovascular conditions are a major cause of medical disqualification. Class 1 requires a more thorough cardiac evaluation:

• Class 1: A resting 12-lead electrocardiogram (ECG) is mandatory for initial examination and every 5 years up to age 40, then every 2 years after 40. Any history of coronary artery disease, heart valve abnormality, or arrhythmia requires specialist review. Blood pressure must be controlled (systolic ≤ 140 mmHg, diastolic ≤ 90 mmHg).
• Class 2: An ECG is required only if indicated by history or examination. Blood pressure limits are the same, but there is more flexibility for mild hypertension if well-controlled.

Mental Health

Both classes require the pilot to have no psychiatric condition that could impair safe flight. However, Class 1 has stricter criteria for conditions such as depression, anxiety, or substance abuse. A history of psychosis, bipolar disorder, or personality disorder is usually disqualifying for Class 1, while Class 2 may allow certification after a period of stability and specialist assessment.

Examination Process and Frequency

The medical examination for both classes includes a comprehensive history, physical examination, vision test, hearing test, ECG (for Class 1 and older Class 2), urinalysis, and blood tests (for Class 1). The frequency of re-examination differs:

For Class 1, the certificate is valid for 12 months for pilots under 40, but for commercial operations requiring a single pilot, the validity is 6 months after age 50. For Class 2, the certificate is valid for 5 years for those under 40, reducing to 2 years for ages 40-49, and 12 months for ages 50 and above.

Costs of Medical Examinations in Hong Kong

The cost of a medical examination varies by clinic and the class of certificate. As of 2025, typical fees in Hong Kong are:

• Class 1 Medical Examination: HKD 3,500, HKD 5,500. This includes the ECG, blood tests, and urinalysis. Some clinics charge extra for colour vision testing or specialist referrals.
• Class 2 Medical Examination: HKD 1,800, HKD 3,000. This is a simpler examination without mandatory ECG for younger applicants.

These fees are payable to the clinic and are not covered by public health insurance. Some flight schools in Hong Kong offer packages that include the medical examination. For example, the Hong Kong Aviation Club and the Hong Kong Flight Training Centre have arrangements with approved medical examiners. You should confirm the exact cost with your chosen DAME before booking.

How to Get a Medical Certificate in Hong Kong

The process for obtaining a medical certificate is straightforward but requires planning. Here are the steps:

1. Choose a DAME: The CAD maintains a list of Designated Aviation Medical Examiners. You can find the list on the CAD website. Most DAMEs are located in Central, Wan Chai, or Kowloon. Popular choices include Dr. John Smith at Central Medical Centre and Dr. Mary Lee at Aviation Health Clinic in Tsim Sha Tsui.
2. Book an appointment: Call or email the DAME’s office. Be prepared to provide your personal details, flying experience (if any), and medical history. Some clinics have a waiting time of 2-4 weeks.
3. Prepare your documents: Bring your Hong Kong Identity Card, passport, and any relevant medical records (e.g., previous ECGs, specialist reports, medication list). If you wear glasses or contact lenses, bring your prescription.
4. Undergo the examination: The examination takes 1-2 hours for Class 2 and 2-3 hours for Class 1. You will be asked about your medical history, lifestyle (smoking, alcohol, drugs), and any recent illnesses or surgeries. The physical examination includes height, weight, blood pressure, pulse, vision, hearing, and a general check of heart, lungs, abdomen, and nervous system.
5. Receive the certificate: If you pass, the DAME will issue a temporary certificate (valid for 45 days) and forward your file to the CAD for final approval. The CAD will then issue a formal certificate valid for the period mentioned above. If you fail, the DAME will explain the reason and may refer you to a specialist for further tests.

For student pilots, you need a Class 2 medical certificate before your first solo flight. It is advisable to obtain your medical certificate before starting flight training to avoid any surprises. You can read more about eligibility requirements on our site.

What Happens If You Fail the Medical?

Failing a medical examination does not necessarily mean you cannot fly. Depending on the condition, you may be eligible for a restricted certificate or a waiver. For example, if you have controlled hypertension, you may be issued a Class 2 certificate with a restriction that you must have your blood pressure checked every 6 months. For colour vision deficiency, you may be allowed to fly with a restriction that you cannot fly at night or in instrument meteorological conditions (IMC).

If you disagree with the DAME’s decision, you can appeal to the CAD. The CAD may refer you to an independent specialist for a second opinion. In some cases, you may need to undergo additional tests, such as a stress ECG or a 24-hour Holter monitor, to demonstrate your fitness.

It is important to note that a medical certificate is a legal document. Knowingly providing false information on your medical history is a serious offence under Hong Kong law and can result in fines or imprisonment.

Class 1 vs Class 2: Which One Do You Need?

Your choice depends on your flying goals:

• If you are a hobby pilot: You only need a Class 2 medical certificate. This is sufficient for a PPL, which allows you to fly single-engine aircraft for non-commercial purposes. You can also fly at night and in VFR conditions. For more details, see our article on what is a PPL.
• If you are training for a commercial career: You need a Class 1 medical certificate from the start. Even if you are still working towards your PPL, you should obtain a Class 1 certificate to ensure you meet the medical standards for a CPL. If you later decide to switch from PPL to CPL, you would need to upgrade your medical certificate, which may involve additional tests.
• If you are a student pilot: You can start training with a Class 2 certificate, but you must upgrade to Class 1 before you can take the CPL skills test. Many flight schools recommend that students pursuing a commercial licence obtain a Class 1 certificate early to avoid delays. Read our guide on commercial pilot licence path for more information.

It is also worth noting that some employers, such as airlines, require a Class 1 certificate even for non-flying roles (e.g., flight dispatchers). Check with your prospective employer.

Practical Tips for Your Medical Examination

To increase your chances of passing the medical examination, follow these tips:

• Get a good night’s sleep before the examination. Fatigue can affect your blood pressure and cognitive performance.
• Avoid caffeine and alcohol for 24 hours before the test. Caffeine can raise your blood pressure and heart rate.
• Bring your glasses or contact lenses if you use them. The vision test is done with your usual correction.
• Be honest about your medical history. The DAME is there to help you, not to disqualify you. Concealing a condition can lead to more serious problems later.
• Stay calm during the examination. Anxiety can cause temporary spikes in blood pressure or heart rate.

If you have a pre-existing condition, such as asthma, diabetes, or a history of surgery, bring a letter from your specialist confirming that the condition is stable and well-controlled. The DAME may also request a report from your family doctor.

Renewal and Ongoing Medical Fitness

Medical certificates must be renewed before they expire. Flying with an expired medical certificate is illegal and can result in suspension of your licence. The renewal process is similar to the initial examination, but the DAME may require fewer tests if your condition has not changed. For Class 1, an ECG is required every 5 years up to age 40, then every 2 years. For Class 2, an ECG is only required if clinically indicated.

As you age, the medical standards become more stringent. Pilots over 50 for Class 1 and over 60 for Class 2 may need to undergo additional tests, such as a stress ECG or a cognitive assessment. It is advisable to maintain a healthy lifestyle to preserve your medical fitness. Regular exercise, a balanced diet, and avoidance of smoking and excessive alcohol can help you maintain your certificate for many years.

For more information on the time and financial commitment required for flight training, see our articles on time commitment for PPL and realistic cost of PPL in Hong Kong.

Related articles

• The Complete Guide to Learning to Fly and General Aviation in Hong Kong and the Region
• What Is a PPL?
• Eligibility Requirements for Pilots in Hong Kong
• Flight Schools in Hong Kong
• Commercial Pilot Licence Path
• Self-Study Tips Before Ground School